CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-disabled skin-theme-clientpref-day vector-toc-available" lang="yue" dir="ltr"> <head> <meta charset="UTF-8"> <title>電 - 維基百科，自由嘅百科全書</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-disabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )zh_yuewikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat": "yue","wgMonthNames":["","1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"wgRequestId":"3cb6b801-2ea2-4c10-9d1c-b7957bfe4ab9","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"電","wgTitle":"電","wgCurRevisionId":2149205,"wgRevisionId":2149205,"wgArticleId":5883,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["有參考錯誤嘅版","電"],"wgPageViewLanguage":"yue","wgPageContentLanguage":"yue","wgPageContentModel":"wikitext","wgRelevantPageName":"電","wgRelevantArticleId":5883,"wgTempUserName":null,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":true,"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"yue","pageLanguageDir":"ltr", "pageVariantFallbacks":"yue"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":true,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":10000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q12725","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.gadget.charinsert-styles":"ready","ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles": "ready","ext.math.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","mediawiki.page.media","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.HanTS-conv","ext.gadget.refToolbar","ext.gadget.charinsert","ext.gadget.internalLinkHelper-altcolor","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns", "ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=yue&modules=ext.cite.styles%7Cext.math.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=yue&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=yue&modules=ext.gadget.charinsert-styles&only=styles&skin=vector-2022"> <link rel="stylesheet" href="/w/load.php?lang=yue&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Lightning_NOAA.jpg/1200px-Lightning_NOAA.jpg"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="807"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Lightning_NOAA.jpg/800px-Lightning_NOAA.jpg"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="538"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Lightning_NOAA.jpg/640px-Lightning_NOAA.jpg"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="430"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="電 - 維基百科，自由嘅百科全書"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//zh-yue.m.wikipedia.org/wiki/%E9%9B%BB"> <link rel="alternate" type="application/x-wiki" title="編輯" href="/w/index.php?title=%E9%9B%BB&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="維基百科 (yue)"> <link rel="EditURI" type="application/rsd+xml" href="//zh-yue.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://zh-yue.wikipedia.org/wiki/%E9%9B%BB"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.zh-yue"> <link rel="alternate" type="application/atom+xml" title="維基百科嘅Atom Feed" href="/w/index.php?title=Special:%E6%9C%80%E8%BF%91%E4%BF%AE%E6%94%B9&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-電 rootpage-電 skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">跳去內容</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="站點"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="主目錄" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">主目錄</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">主目錄</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">移去側欄</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">收埋</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> 導覽 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/%E9%A0%AD%E7%89%88" title="睇頭版[z]" accesskey="z"><span>頭版</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Portal:%E7%9B%AE%E9%8C%84"><span>目錄</span></a></li><li id="n-featuredcontent" class="mw-list-item"><a href="/wiki/Portal:%E6%AD%A3%E5%98%A2"><span>正嘢</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:%E6%99%82%E4%BA%BA%E6%99%82%E4%BA%8B" title="提供而家發生嘅事嘅背景資料"><span>時人時事</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:%E6%98%AF%E4%BD%86%E4%B8%80%E7%89%88" title="是但載入一版[x]" accesskey="x"><span>是但一版</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:%E9%97%9C%E6%96%BC"><span>關於維基百科</span></a></li><li id="n-聯絡處" class="mw-list-item"><a href="/wiki/Wikipedia:%E8%81%AF%E7%B5%A1%E6%88%91%E5%93%8B"><span>聯絡處</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> 交流 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-說明書" class="mw-list-item"><a href="https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Contents"><span>說明書</span></a></li><li id="n-城市論壇" class="mw-list-item"><a href="/wiki/Wikipedia:%E5%9F%8E%E5%B8%82%E8%AB%96%E5%A3%87"><span>城市論壇</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:%E7%A4%BE%E5%8D%80%E5%A4%A7%E5%A0%82" title="關於呢個計劃，你可以做乜，應該要點做"><span>社區大堂</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:%E6%9C%80%E8%BF%91%E4%BF%AE%E6%94%B9" title="列出呢個 wiki 中嘅最近修改[r]" accesskey="r"><span>最近修改</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/%E9%A0%AD%E7%89%88" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="維基百科" src="/static/images/mobile/copyright/wikipedia-wordmark-zh_yue.svg" style="width: 7.5em; height: 1.625em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-zh_yue.svg" width="120" height="16" style="width: 7.5em; height: 1em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:%E6%90%9C%E7%B4%A2" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="搵維基百科[f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>查嘢</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="搵維基百科" aria-label="搵維基百科" autocapitalize="sentences" title="搵維基百科[f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:搜索"> </div> <button class="cdx-button cdx-search-input__end-button">搵嘢</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="個人架生"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="閱讀設定"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="閱讀設定" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">閱讀設定</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_zh-yue.wikipedia.org&uselang=yue" class=""><span>捐畀維基百科</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:%E9%96%8B%E6%88%B6&returnto=%E9%9B%BB" title="建議你開返個戶口簽到，不過唔做都無所謂。" class=""><span>開戶口</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:%E7%B0%BD%E5%88%B0&returnto=%E9%9B%BB" title="唔係是必要簽到，但建議你噉做。[o]" accesskey="o" class=""><span>簽到</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out user-links-collapsible-item" title="多啲選項" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="個人架生" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">個人架生</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="用戶選單" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_zh-yue.wikipedia.org&uselang=yue"><span>捐畀維基百科</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:%E9%96%8B%E6%88%B6&returnto=%E9%9B%BB" title="建議你開返個戶口簽到，不過唔做都無所謂。"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>開戶口</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:%E7%B0%BD%E5%88%B0&returnto=%E9%9B%BB" title="唔係是必要簽到，但建議你噉做。[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>簽到</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="站點"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="目錄" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">目錄</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">移去側欄</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">收埋</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">文頭</div> </a> </li> <li id="toc-電荷" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#電荷"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>電荷</span> </div> </a> <ul id="toc-電荷-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-電嘅概念" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#電嘅概念"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>電嘅概念</span> </div> </a> <button aria-controls="toc-電嘅概念-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>切換去電嘅概念細章節</span> </button> <ul id="toc-電嘅概念-sublist" class="vector-toc-list"> <li id="toc-電場" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#電場"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>電場</span> </div> </a> <ul id="toc-電場-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-電壓" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#電壓"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>電壓</span> </div> </a> <ul id="toc-電壓-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-電流" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#電流"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>電流</span> </div> </a> <ul id="toc-電流-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-電阻" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#電阻"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.4</span> <span>電阻</span> </div> </a> <ul id="toc-電阻-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-註釋" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#註釋"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>註釋</span> </div> </a> <ul id="toc-註釋-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-參考資料" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#參考資料"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>參考資料</span> </div> </a> <ul id="toc-參考資料-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-外部連結" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#外部連結"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>外部連結</span> </div> </a> <ul id="toc-外部連結-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目錄" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="開/收內容一覽" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">開/收內容一覽</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">電</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="去睇另一種語文嘅文章。有170種語言版本。" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-170" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">170種語言</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Elektrisiteit" title="Elektrisiteit – 南非荷蘭文" lang="af" hreflang="af" data-title="Elektrisiteit" data-language-autonym="Afrikaans" data-language-local-name="南非荷蘭文" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Elektrizit%C3%A4t" title="Elektrizität – 德文（瑞士）" lang="gsw" hreflang="gsw" data-title="Elektrizität" data-language-autonym="Alemannisch" data-language-local-name="德文（瑞士）" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8A%AE%E1%88%A8%E1%8A%95%E1%89%B2" title="ኮረንቲ – 阿姆哈拉文" lang="am" hreflang="am" data-title="ኮረንቲ" data-language-autonym="አማርኛ" data-language-local-name="阿姆哈拉文" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Electricidat" title="Electricidat – 阿拉貢文" lang="an" hreflang="an" data-title="Electricidat" data-language-autonym="Aragonés" data-language-local-name="阿拉貢文" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%A6%E0%A5%8D%E0%A4%AF%E0%A5%81%E0%A4%A4" title="विद्युत – 昂加文" lang="anp" hreflang="anp" data-title="विद्युत" data-language-autonym="अंगिका" data-language-local-name="昂加文" class="interlanguage-link-target"><span>अंगिका</span></a></li><li class="interlanguage-link interwiki-ar badge-Q17437796 badge-featuredarticle mw-list-item" title="正文"><a href="https://ar.wikipedia.org/wiki/%D9%83%D9%87%D8%B1%D8%A8%D8%A7%D8%A1" title="كهرباء – 阿拉伯文" lang="ar" hreflang="ar" data-title="كهرباء" data-language-autonym="العربية" data-language-local-name="阿拉伯文" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%9F%DC%97%DC%AA%DC%92%DC%90" title="ܟܗܪܒܐ – 阿拉米文" lang="arc" hreflang="arc" data-title="ܟܗܪܒܐ" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="阿拉米文" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%AA%D8%B1%D9%8A%D8%B3%D9%8A%D9%86%D8%AA%D9%8A" title="تريسينتي – 摩洛哥阿拉伯文" lang="ary" hreflang="ary" data-title="تريسينتي" data-language-autonym="الدارجة" data-language-local-name="摩洛哥阿拉伯文" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%83%D9%87%D8%B1%D8%A8%D8%A7" title="كهربا – 埃及阿拉伯文" lang="arz" hreflang="arz" data-title="كهربا" data-language-autonym="مصرى" data-language-local-name="埃及阿拉伯文" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%AC%E0%A6%BF%E0%A6%A6%E0%A7%8D%E0%A6%AF%E0%A7%81%E0%A7%8E" title="বিদ্যুৎ – 阿薩姆文" lang="as" hreflang="as" data-title="বিদ্যুৎ" data-language-autonym="অসমীয়া" data-language-local-name="阿薩姆文" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Lletricid%C3%A1" title="Lletricidá – 阿斯圖里亞文" lang="ast" hreflang="ast" data-title="Lletricidá" data-language-autonym="Asturianu" data-language-local-name="阿斯圖里亞文" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-awa mw-list-item"><a href="https://awa.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%A6%E0%A5%8D%E0%A4%AF%E0%A5%81%E0%A4%A4" title="विद्युत – 阿瓦文" lang="awa" hreflang="awa" data-title="विद्युत" data-language-autonym="अवधी" data-language-local-name="阿瓦文" class="interlanguage-link-target"><span>अवधी</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Elektrik" title="Elektrik – 亞塞拜然文" lang="az" hreflang="az" data-title="Elektrik" data-language-autonym="Azərbaycanca" data-language-local-name="亞塞拜然文" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%D9%84%DA%A9%D8%AA%D8%B1%DB%8C%DA%A9" title="الکتریک – South Azerbaijani" lang="azb" hreflang="azb" data-title="الکتریک" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80" title="Электр – 巴什客爾文" lang="ba" hreflang="ba" data-title="Электр" data-language-autonym="Башҡортса" data-language-local-name="巴什客爾文" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Alektra" title="Alektra – 薩莫吉希亞文" lang="sgs" hreflang="sgs" data-title="Alektra" data-language-autonym="Žemaitėška" data-language-local-name="薩莫吉希亞文" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Elektrisidad" title="Elektrisidad – Central Bikol" lang="bcl" hreflang="bcl" data-title="Elektrisidad" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D1%8B%D1%87%D0%BD%D0%B0%D1%81%D1%86%D1%8C" title="Электрычнасць – 白俄羅斯文" lang="be" hreflang="be" data-title="Электрычнасць" data-language-autonym="Беларуская" data-language-local-name="白俄羅斯文" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D1%8B%D1%87%D0%BD%D0%B0%D1%81%D1%8C%D1%86%D1%8C" title="Электрычнасьць – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Электрычнасьць" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%95%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%B8%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%BE" title="Електричество – 保加利亞文" lang="bg" hreflang="bg" data-title="Електричество" data-language-autonym="Български" data-language-local-name="保加利亞文" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AC%E0%A4%BF%E0%A4%9C%E0%A4%B2%E0%A5%80" title="बिजली – Bhojpuri" lang="bh" hreflang="bh" data-title="बिजली" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bjn mw-list-item"><a href="https://bjn.wikipedia.org/wiki/Lestr%C3%A9k" title="Lestrék – 班亞爾文" lang="bjn" hreflang="bjn" data-title="Lestrék" data-language-autonym="Banjar" data-language-local-name="班亞爾文" class="interlanguage-link-target"><span>Banjar</span></a></li><li class="interlanguage-link interwiki-bm mw-list-item"><a href="https://bm.wikipedia.org/wiki/K%C3%B9ran" title="Kùran – 班巴拉文" lang="bm" hreflang="bm" data-title="Kùran" data-language-autonym="Bamanankan" data-language-local-name="班巴拉文" class="interlanguage-link-target"><span>Bamanankan</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%A4%E0%A6%A1%E0%A6%BC%E0%A6%BF%E0%A7%8E" title="তড়িৎ – 孟加拉文" lang="bn" hreflang="bn" data-title="তড়িৎ" data-language-autonym="বাংলা" data-language-local-name="孟加拉文" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Tredan" title="Tredan – 布列塔尼文" lang="br" hreflang="br" data-title="Tredan" data-language-autonym="Brezhoneg" data-language-local-name="布列塔尼文" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Elektricitet" title="Elektricitet – 波士尼亞文" lang="bs" hreflang="bs" data-title="Elektricitet" data-language-autonym="Bosanski" data-language-local-name="波士尼亞文" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%A1%D0%B0%D1%85%D0%B8%D0%BB%D0%B3%D0%B0%D0%B0%D0%BD" title="Сахилгаан – Russia Buriat" lang="bxr" hreflang="bxr" data-title="Сахилгаан" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target"><span>Буряад</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Electricitat" title="Electricitat – 加泰羅尼亞文" lang="ca" hreflang="ca" data-title="Electricitat" data-language-autonym="Català" data-language-local-name="加泰羅尼亞文" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Di%C3%AAng" title="Diêng – Mindong" lang="cdo" hreflang="cdo" data-title="Diêng" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Elektrisidad" title="Elektrisidad – 宿霧文" lang="ceb" hreflang="ceb" data-title="Elektrisidad" data-language-autonym="Cebuano" data-language-local-name="宿霧文" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B1%DB%95%D8%A8%D8%A7" title="کارەبا – 索拉尼庫爾德文" lang="ckb" hreflang="ckb" data-title="کارەبا" data-language-autonym="کوردی" data-language-local-name="索拉尼庫爾德文" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-crh mw-list-item"><a href="https://crh.wikipedia.org/wiki/Elektrik" title="Elektrik – 克里米亞半島的土耳其文；克里米亞半島的塔塔爾文" lang="crh" hreflang="crh" data-title="Elektrik" data-language-autonym="Qırımtatarca" data-language-local-name="克里米亞半島的土耳其文；克里米亞半島的塔塔爾文" class="interlanguage-link-target"><span>Qırımtatarca</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Elekt%C5%99ina" title="Elektřina – 捷克文" lang="cs" hreflang="cs" data-title="Elektřina" data-language-autonym="Čeština" data-language-local-name="捷克文" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE" title="Электро – 楚瓦什文" lang="cv" hreflang="cv" data-title="Электро" data-language-autonym="Чӑвашла" data-language-local-name="楚瓦什文" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Trydan" title="Trydan – 威爾斯文" lang="cy" hreflang="cy" data-title="Trydan" data-language-autonym="Cymraeg" data-language-local-name="威爾斯文" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Elektricitet" title="Elektricitet – 丹麥文" lang="da" hreflang="da" data-title="Elektricitet" data-language-autonym="Dansk" data-language-local-name="丹麥文" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Elektrizit%C3%A4t" title="Elektrizität – 德文" lang="de" hreflang="de" data-title="Elektrizität" data-language-autonym="Deutsch" data-language-local-name="德文" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-din mw-list-item"><a href="https://din.wikipedia.org/wiki/Manyw%C3%AB%C3%ABth" title="Manywëëth – 丁卡文" lang="din" hreflang="din" data-title="Manywëëth" data-language-autonym="Thuɔŋjäŋ" data-language-local-name="丁卡文" class="interlanguage-link-target"><span>Thuɔŋjäŋ</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Elektrik" title="Elektrik – Zazaki" lang="diq" hreflang="diq" data-title="Elektrik" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%97%CE%BB%CE%B5%CE%BA%CF%84%CF%81%CE%B9%CF%83%CE%BC%CF%8C%CF%82" title="Ηλεκτρισμός – 希臘文" lang="el" hreflang="el" data-title="Ηλεκτρισμός" data-language-autonym="Ελληνικά" data-language-local-name="希臘文" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="好文"><a href="https://en.wikipedia.org/wiki/Electricity" title="Electricity – 英文" lang="en" hreflang="en" data-title="Electricity" data-language-autonym="English" data-language-local-name="英文" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Elektro" title="Elektro – 世界文" lang="eo" hreflang="eo" data-title="Elektro" data-language-autonym="Esperanto" data-language-local-name="世界文" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Electricidad" title="Electricidad – 西班牙文" lang="es" hreflang="es" data-title="Electricidad" data-language-autonym="Español" data-language-local-name="西班牙文" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Elekter" title="Elekter – 愛沙尼亞文" lang="et" hreflang="et" data-title="Elekter" data-language-autonym="Eesti" data-language-local-name="愛沙尼亞文" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Elektrizitate" title="Elektrizitate – 巴斯克文" lang="eu" hreflang="eu" data-title="Elektrizitate" data-language-autonym="Euskara" data-language-local-name="巴斯克文" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/Eletricid%C3%A1" title="Eletricidá – 埃斯特雷馬杜拉文" lang="ext" hreflang="ext" data-title="Eletricidá" data-language-autonym="Estremeñu" data-language-local-name="埃斯特雷馬杜拉文" class="interlanguage-link-target"><span>Estremeñu</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%D9%84%DA%A9%D8%AA%D8%B1%DB%8C%D8%B3%DB%8C%D8%AA%D9%87" title="الکتریسیته – 波斯文" lang="fa" hreflang="fa" data-title="الکتریسیته" data-language-autonym="فارسی" data-language-local-name="波斯文" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/S%C3%A4hk%C3%B6" title="Sähkö – 芬蘭文" lang="fi" hreflang="fi" data-title="Sähkö" data-language-autonym="Suomi" data-language-local-name="芬蘭文" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fiu-vro mw-list-item"><a href="https://fiu-vro.wikipedia.org/wiki/Eelektri" title="Eelektri – 佛羅文" lang="vro" hreflang="vro" data-title="Eelektri" data-language-autonym="Võro" data-language-local-name="佛羅文" class="interlanguage-link-target"><span>Võro</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Ravmagn" title="Ravmagn – 法羅文" lang="fo" hreflang="fo" data-title="Ravmagn" data-language-autonym="Føroyskt" data-language-local-name="法羅文" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr badge-Q17437798 badge-goodarticle mw-list-item" title="好文"><a href="https://fr.wikipedia.org/wiki/%C3%89lectricit%C3%A9" title="Électricité – 法文" lang="fr" hreflang="fr" data-title="Électricité" data-language-autonym="Français" data-language-local-name="法文" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Elektritsiteet" title="Elektritsiteet – 北弗里西亞文" lang="frr" hreflang="frr" data-title="Elektritsiteet" data-language-autonym="Nordfriisk" data-language-local-name="北弗里西亞文" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Eletricit%C3%A2t" title="Eletricitât – 弗留利文" lang="fur" hreflang="fur" data-title="Eletricitât" data-language-autonym="Furlan" data-language-local-name="弗留利文" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Elektrisiteit" title="Elektrisiteit – 西弗里西亞文" lang="fy" hreflang="fy" data-title="Elektrisiteit" data-language-autonym="Frysk" data-language-local-name="西弗里西亞文" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Leictreachas" title="Leictreachas – 愛爾蘭文" lang="ga" hreflang="ga" data-title="Leictreachas" data-language-autonym="Gaeilge" data-language-local-name="愛爾蘭文" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E9%9B%BB%E6%B0%A3" title="電氣 – 贛語" lang="gan" hreflang="gan" data-title="電氣" data-language-autonym="贛語" data-language-local-name="贛語" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/%C3%89lektrisit%C3%A9" title="Élektrisité – Guianan Creole" lang="gcr" hreflang="gcr" data-title="Élektrisité" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Dealan" title="Dealan – 蘇格蘭蓋爾文" lang="gd" hreflang="gd" data-title="Dealan" data-language-autonym="Gàidhlig" data-language-local-name="蘇格蘭蓋爾文" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Electricidade" title="Electricidade – 加里西亞文" lang="gl" hreflang="gl" data-title="Electricidade" data-language-autonym="Galego" data-language-local-name="加里西亞文" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Tendyry" title="Tendyry – 瓜拉尼文" lang="gn" hreflang="gn" data-title="Tendyry" data-language-autonym="Avañe'ẽ" data-language-local-name="瓜拉尼文" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-gom mw-list-item"><a href="https://gom.wikipedia.org/wiki/%E0%A4%B5%E0%A5%80%E0%A4%9C" title="वीज – 孔卡尼文" lang="gom" hreflang="gom" data-title="वीज" data-language-autonym="गोंयची कोंकणी / Gõychi Konknni" data-language-local-name="孔卡尼文" class="interlanguage-link-target"><span>गोंयची कोंकणी / Gõychi Konknni</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%B5%E0%AB%80%E0%AA%9C%E0%AA%B3%E0%AB%80" title="વીજળી – 古吉拉特文" lang="gu" hreflang="gu" data-title="વીજળી" data-language-autonym="ગુજરાતી" data-language-local-name="古吉拉特文" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%97%D7%A9%D7%9E%D7%9C" title="חשמל – 希伯來文" lang="he" hreflang="he" data-title="חשמל" data-language-autonym="עברית" data-language-local-name="希伯來文" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%A6%E0%A5%8D%E0%A4%AF%E0%A5%81%E0%A4%A4" title="विद्युत – 北印度文" lang="hi" hreflang="hi" data-title="विद्युत" data-language-autonym="हिन्दी" data-language-local-name="北印度文" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Electricity" title="Electricity – 斐濟印地文" lang="hif" hreflang="hif" data-title="Electricity" data-language-autonym="Fiji Hindi" data-language-local-name="斐濟印地文" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Elektricitet" title="Elektricitet – 克羅埃西亞文" lang="hr" hreflang="hr" data-title="Elektricitet" data-language-autonym="Hrvatski" data-language-local-name="克羅埃西亞文" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht badge-Q17437798 badge-goodarticle mw-list-item" title="好文"><a href="https://ht.wikipedia.org/wiki/Elektrisite" title="Elektrisite – 海地文" lang="ht" hreflang="ht" data-title="Elektrisite" data-language-autonym="Kreyòl ayisyen" data-language-local-name="海地文" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Elektromoss%C3%A1g" title="Elektromosság – 匈牙利文" lang="hu" hreflang="hu" data-title="Elektromosság" data-language-autonym="Magyar" data-language-local-name="匈牙利文" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B7%D5%AC%D5%A5%D5%AF%D5%BF%D6%80%D5%A1%D5%AF%D5%A1%D5%B6%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6" title="Էլեկտրականություն – 亞美尼亞文" lang="hy" hreflang="hy" data-title="Էլեկտրականություն" data-language-autonym="Հայերեն" data-language-local-name="亞美尼亞文" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D4%B5%D5%AC%D5%A5%D5%AF%D5%BF%D6%80%D5%A1%D5%AF%D5%A1%D5%B6%D5%B8%D6%82%D5%A9%D5%AB%D6%82%D5%B6" title="Ելեկտրականութիւն – Western Armenian" lang="hyw" hreflang="hyw" data-title="Ելեկտրականութիւն" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Electricitate" title="Electricitate – 國際文" lang="ia" hreflang="ia" data-title="Electricitate" data-language-autonym="Interlingua" data-language-local-name="國際文" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Listrik" title="Listrik – 印尼文" lang="id" hreflang="id" data-title="Listrik" data-language-autonym="Bahasa Indonesia" data-language-local-name="印尼文" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Elektro" title="Elektro – 伊多文" lang="io" hreflang="io" data-title="Elektro" data-language-autonym="Ido" data-language-local-name="伊多文" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Rafmagn" title="Rafmagn – 冰島文" lang="is" hreflang="is" data-title="Rafmagn" data-language-autonym="Íslenska" data-language-local-name="冰島文" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Elettricit%C3%A0" title="Elettricità – 義大利文" lang="it" hreflang="it" data-title="Elettricità" data-language-autonym="Italiano" data-language-local-name="義大利文" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-iu mw-list-item"><a href="https://iu.wikipedia.org/wiki/%E1%93%B4%E1%95%95%E1%92%90%E1%90%85%E1%94%AD%E1%96%85/ikumautit" title="ᓴᕕᒐᐅᔭᖅ/ikumautit – 因紐特文" lang="iu" hreflang="iu" data-title="ᓴᕕᒐᐅᔭᖅ/ikumautit" data-language-autonym="ᐃᓄᒃᑎᑐᑦ / inuktitut" data-language-local-name="因紐特文" class="interlanguage-link-target"><span>ᐃᓄᒃᑎᑐᑦ / inuktitut</span></a></li><li class="interlanguage-link interwiki-ja badge-Q17437798 badge-goodarticle mw-list-item" title="好文"><a href="https://ja.wikipedia.org/wiki/%E9%9B%BB%E6%B0%97" title="電気 – 日文" lang="ja" hreflang="ja" data-title="電気" data-language-autonym="日本語" data-language-local-name="日文" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Ilekchrixiti" title="Ilekchrixiti – 牙買加克裏奧爾英文" lang="jam" hreflang="jam" data-title="Ilekchrixiti" data-language-autonym="Patois" data-language-local-name="牙買加克裏奧爾英文" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Listrik" title="Listrik – 爪哇文" lang="jv" hreflang="jv" data-title="Listrik" data-language-autonym="Jawa" data-language-local-name="爪哇文" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%94%E1%83%9A%E1%83%94%E1%83%A5%E1%83%A2%E1%83%A0%E1%83%9D%E1%83%91%E1%83%90" title="ელექტრობა – 喬治亞文" lang="ka" hreflang="ka" data-title="ელექტრობა" data-language-autonym="ქართული" data-language-local-name="喬治亞文" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Trisiti" title="Trisiti – 卡比爾文" lang="kab" hreflang="kab" data-title="Trisiti" data-language-autonym="Taqbaylit" data-language-local-name="卡比爾文" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/Laatriki_mi%C5%8B" title="Laatriki miŋ – Kabiye" lang="kbp" hreflang="kbp" data-title="Laatriki miŋ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kcg mw-list-item"><a href="https://kcg.wikipedia.org/wiki/Long_a%CC%B1gwomnati" title="Long a̱gwomnati – 卡塔布文" lang="kcg" hreflang="kcg" data-title="Long a̱gwomnati" data-language-autonym="Tyap" data-language-local-name="卡塔布文" class="interlanguage-link-target"><span>Tyap</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80" title="Электр – 哈薩克文" lang="kk" hreflang="kk" data-title="Электр" data-language-autonym="Қазақша" data-language-local-name="哈薩克文" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B5%E0%B2%BF%E0%B2%A6%E0%B3%8D%E0%B2%AF%E0%B3%81%E0%B2%9A%E0%B3%8D%E0%B2%9B%E0%B2%95%E0%B3%8D%E0%B2%A4%E0%B2%BF" title="ವಿದ್ಯುಚ್ಛಕ್ತಿ – 坎那達文" lang="kn" hreflang="kn" data-title="ವಿದ್ಯುಚ್ಛಕ್ತಿ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="坎那達文" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A0%84%EA%B8%B0" title="전기 – 韓文" lang="ko" hreflang="ko" data-title="전기" data-language-autonym="한국어" data-language-local-name="韓文" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Elektr%C3%AEk" title="Elektrîk – 庫爾德文" lang="ku" hreflang="ku" data-title="Elektrîk" data-language-autonym="Kurdî" data-language-local-name="庫爾德文" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Tredan" title="Tredan – 康瓦耳文" lang="kw" hreflang="kw" data-title="Tredan" data-language-autonym="Kernowek" data-language-local-name="康瓦耳文" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80" title="Электр – 吉爾吉斯文" lang="ky" hreflang="ky" data-title="Электр" data-language-autonym="Кыргызча" data-language-local-name="吉爾吉斯文" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Electricitas" title="Electricitas – 拉丁文" lang="la" hreflang="la" data-title="Electricitas" data-language-autonym="Latina" data-language-local-name="拉丁文" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Elektrizit%C3%A9it" title="Elektrizitéit – 盧森堡文" lang="lb" hreflang="lb" data-title="Elektrizitéit" data-language-autonym="Lëtzebuergesch" data-language-local-name="盧森堡文" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lg mw-list-item"><a href="https://lg.wikipedia.org/wiki/Amasannyalaze" title="Amasannyalaze – 干達文" lang="lg" hreflang="lg" data-title="Amasannyalaze" data-language-autonym="Luganda" data-language-local-name="干達文" class="interlanguage-link-target"><span>Luganda</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Elektricit%C3%A8%C3%A8t" title="Elektricitèèt – 林堡文" lang="li" hreflang="li" data-title="Elektricitèèt" data-language-autonym="Limburgs" data-language-local-name="林堡文" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Elettri%C3%A7it%C3%A6" title="Elettriçitæ – 利古里亞文" lang="lij" hreflang="lij" data-title="Elettriçitæ" data-language-autonym="Ligure" data-language-local-name="利古里亞文" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Eletricit%C3%A0" title="Eletricità – 倫巴底文" lang="lmo" hreflang="lmo" data-title="Eletricità" data-language-autonym="Lombard" data-language-local-name="倫巴底文" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Lotil%C3%ADki" title="Lotilíki – 林加拉文" lang="ln" hreflang="ln" data-title="Lotilíki" data-language-autonym="Lingála" data-language-local-name="林加拉文" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Elektra" title="Elektra – 立陶宛文" lang="lt" hreflang="lt" data-title="Elektra" data-language-autonym="Lietuvių" data-language-local-name="立陶宛文" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Elektr%C4%ABba" title="Elektrība – 拉脫維亞文" lang="lv" hreflang="lv" data-title="Elektrība" data-language-autonym="Latviešu" data-language-local-name="拉脫維亞文" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Aratra" title="Aratra – 馬拉加什文" lang="mg" hreflang="mg" data-title="Aratra" data-language-autonym="Malagasy" data-language-local-name="馬拉加什文" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Listrik" title="Listrik – 米南卡堡文" lang="min" hreflang="min" data-title="Listrik" data-language-autonym="Minangkabau" data-language-local-name="米南卡堡文" class="interlanguage-link-target"><span>Minangkabau</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%95%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%B8%D1%86%D0%B8%D1%82%D0%B5%D1%82" title="Електрицитет – 馬其頓文" lang="mk" hreflang="mk" data-title="Електрицитет" data-language-autonym="Македонски" data-language-local-name="馬其頓文" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B5%E0%B5%88%E0%B4%A6%E0%B5%8D%E0%B4%AF%E0%B5%81%E0%B4%A4%E0%B4%BF" title="വൈദ്യുതി – 馬來亞拉姆文" lang="ml" hreflang="ml" data-title="വൈദ്യുതി" data-language-autonym="മലയാളം" data-language-local-name="馬來亞拉姆文" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B5%E0%A5%80%E0%A4%9C" title="वीज – 馬拉地文" lang="mr" hreflang="mr" data-title="वीज" data-language-autonym="मराठी" data-language-local-name="馬拉地文" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Elektrik" title="Elektrik – 馬來文" lang="ms" hreflang="ms" data-title="Elektrik" data-language-autonym="Bahasa Melayu" data-language-local-name="馬來文" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mwl mw-list-item"><a href="https://mwl.wikipedia.org/wiki/Eilatricidade" title="Eilatricidade – 米蘭德斯文" lang="mwl" hreflang="mwl" data-title="Eilatricidade" data-language-autonym="Mirandés" data-language-local-name="米蘭德斯文" class="interlanguage-link-target"><span>Mirandés</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%9C%E1%80%BB%E1%80%BE%E1%80%95%E1%80%BA%E1%80%85%E1%80%85%E1%80%BA%E1%80%93%E1%80%AC%E1%80%90%E1%80%BA%E1%80%A1%E1%80%AC%E1%80%B8" title="လျှပ်စစ်ဓာတ်အား – 緬甸文" lang="my" hreflang="my" data-title="လျှပ်စစ်ဓာတ်အား" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="緬甸文" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/%D0%A6%D0%B8%D1%82%D0%B5%D1%80%D1%8C" title="Цитерь – 厄爾茲亞文" lang="myv" hreflang="myv" data-title="Цитерь" data-language-autonym="Эрзянь" data-language-local-name="厄爾茲亞文" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Elettric%C3%ACt%C3%A0" title="Elettricìtà – 拿波里文" lang="nap" hreflang="nap" data-title="Elettricìtà" data-language-autonym="Napulitano" data-language-local-name="拿波里文" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Elektrizit%C3%A4t" title="Elektrizität – 低地德文" lang="nds" hreflang="nds" data-title="Elektrizität" data-language-autonym="Plattdüütsch" data-language-local-name="低地德文" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%A6%E0%A5%8D%E0%A4%AF%E0%A5%81%E0%A4%A4" title="विद्युत – 尼泊爾文" lang="ne" hreflang="ne" data-title="विद्युत" data-language-autonym="नेपाली" data-language-local-name="尼泊爾文" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%A6%E0%A5%8D%E0%A4%AF%E0%A5%81%E0%A4%A4" title="विद्युत – 尼瓦爾文" lang="new" hreflang="new" data-title="विद्युत" data-language-autonym="नेपाल भाषा" data-language-local-name="尼瓦爾文" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Elektriciteit" title="Elektriciteit – 荷蘭文" lang="nl" hreflang="nl" data-title="Elektriciteit" data-language-autonym="Nederlands" data-language-local-name="荷蘭文" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Elektrisitet" title="Elektrisitet – 耐諾斯克挪威文" lang="nn" hreflang="nn" data-title="Elektrisitet" data-language-autonym="Norsk nynorsk" data-language-local-name="耐諾斯克挪威文" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Elektrisitet" title="Elektrisitet – 巴克摩挪威文" lang="nb" hreflang="nb" data-title="Elektrisitet" data-language-autonym="Norsk bokmål" data-language-local-name="巴克摩挪威文" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nrm mw-list-item"><a href="https://nrm.wikipedia.org/wiki/%C3%8Atricita%C3%A9" title="Êtricitaé – Norman" lang="nrf" hreflang="nrf" data-title="Êtricitaé" data-language-autonym="Nouormand" data-language-local-name="Norman" class="interlanguage-link-target"><span>Nouormand</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/Mohlakase" title="Mohlakase – 北索托文" lang="nso" hreflang="nso" data-title="Mohlakase" data-language-autonym="Sesotho sa Leboa" data-language-local-name="北索托文" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Electricitat" title="Electricitat – 奧克西坦文" lang="oc" hreflang="oc" data-title="Electricitat" data-language-autonym="Occitan" data-language-local-name="奧克西坦文" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Elektirikii" title="Elektirikii – 奧羅莫文" lang="om" hreflang="om" data-title="Elektirikii" data-language-autonym="Oromoo" data-language-local-name="奧羅莫文" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%AC%E0%AC%BF%E0%AC%A6%E0%AD%8D%E0%AD%9F%E0%AD%81%E0%AC%A4" title="ବିଦ୍ୟୁତ – 歐利亞文" lang="or" hreflang="or" data-title="ବିଦ୍ୟୁତ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="歐利亞文" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-os mw-list-item"><a href="https://os.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D0%B4%D1%8B%D1%85" title="Электрондых – 奧塞提文" lang="os" hreflang="os" data-title="Электрондых" data-language-autonym="Ирон" data-language-local-name="奧塞提文" class="interlanguage-link-target"><span>Ирон</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AC%E0%A8%BF%E0%A8%9C%E0%A8%B2%E0%A9%80" title="ਬਿਜਲੀ – 旁遮普文" lang="pa" hreflang="pa" data-title="ਬਿਜਲੀ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="旁遮普文" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Elektryczno%C5%9B%C4%87" title="Elektryczność – 波蘭文" lang="pl" hreflang="pl" data-title="Elektryczność" data-language-autonym="Polski" data-language-local-name="波蘭文" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A8%D8%AC%D9%84%DB%8C" title="بجلی – Western Punjabi" lang="pnb" hreflang="pnb" data-title="بجلی" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%A8%D8%B1%DB%90%DA%9A%D9%86%D8%A7" title="برېښنا – 普什圖文" lang="ps" hreflang="ps" data-title="برېښنا" data-language-autonym="پښتو" data-language-local-name="普什圖文" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Eletricidade" title="Eletricidade – 葡萄牙文" lang="pt" hreflang="pt" data-title="Eletricidade" data-language-autonym="Português" data-language-local-name="葡萄牙文" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Pinchikilla" title="Pinchikilla – 蓋楚瓦文" lang="qu" hreflang="qu" data-title="Pinchikilla" data-language-autonym="Runa Simi" data-language-local-name="蓋楚瓦文" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Electricitate" title="Electricitate – 羅馬尼亞文" lang="ro" hreflang="ro" data-title="Electricitate" data-language-autonym="Română" data-language-local-name="羅馬尼亞文" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%B8%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%BE" title="Электричество – 俄文" lang="ru" hreflang="ru" data-title="Электричество" data-language-autonym="Русский" data-language-local-name="俄文" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%95%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%B8%D0%BA%D0%B0" title="Електрика – 盧森尼亞文" lang="rue" hreflang="rue" data-title="Електрика" data-language-autonym="Русиньскый" data-language-local-name="盧森尼亞文" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A7%D0%B0%D2%95%D1%8B%D0%BB%D1%8B%D0%BC%D0%B0" title="Чаҕылыма – 雅庫特文" lang="sah" hreflang="sah" data-title="Чаҕылыма" data-language-autonym="Саха тыла" data-language-local-name="雅庫特文" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Elettricitati" title="Elettricitati – 西西里文" lang="scn" hreflang="scn" data-title="Elettricitati" data-language-autonym="Sicilianu" data-language-local-name="西西里文" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Electricity" title="Electricity – 蘇格蘭文" lang="sco" hreflang="sco" data-title="Electricity" data-language-autonym="Scots" data-language-local-name="蘇格蘭文" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%A8%D8%B1%D9%82%D9%8A%D9%8A%D8%A7%D8%AA" title="برقييات – 信德文" lang="sd" hreflang="sd" data-title="برقييات" data-language-autonym="سنڌي" data-language-local-name="信德文" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Elektricitet" title="Elektricitet – 塞爾維亞克羅埃西亞文" lang="sh" hreflang="sh" data-title="Elektricitet" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="塞爾維亞克羅埃西亞文" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%80%E0%B7%92%E0%B6%AF%E0%B7%8A%E2%80%8D%E0%B6%BA%E0%B7%94%E0%B6%AD%E0%B6%BA" title="විද්‍යුතය – 僧伽羅文" lang="si" hreflang="si" data-title="විද්‍යුතය" data-language-autonym="සිංහල" data-language-local-name="僧伽羅文" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Electricity" title="Electricity – Simple English" lang="en-simple" hreflang="en-simple" data-title="Electricity" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Elektrina" title="Elektrina – 斯洛伐克文" lang="sk" hreflang="sk" data-title="Elektrina" data-language-autonym="Slovenčina" data-language-local-name="斯洛伐克文" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Elektrika" title="Elektrika – 斯洛維尼亞文" lang="sl" hreflang="sl" data-title="Elektrika" data-language-autonym="Slovenščina" data-language-local-name="斯洛維尼亞文" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Magetsi" title="Magetsi – 塞內加爾文" lang="sn" hreflang="sn" data-title="Magetsi" data-language-autonym="ChiShona" data-language-local-name="塞內加爾文" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Koronto" title="Koronto – 索馬利文" lang="so" hreflang="so" data-title="Koronto" data-language-autonym="Soomaaliga" data-language-local-name="索馬利文" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Elektriciteti" title="Elektriciteti – 阿爾巴尼亞文" lang="sq" hreflang="sq" data-title="Elektriciteti" data-language-autonym="Shqip" data-language-local-name="阿爾巴尼亞文" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%95%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%B8%D1%86%D0%B8%D1%82%D0%B5%D1%82" title="Електрицитет – 塞爾維亞文" lang="sr" hreflang="sr" data-title="Електрицитет" data-language-autonym="Српски / srpski" data-language-local-name="塞爾維亞文" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-st mw-list-item"><a href="https://st.wikipedia.org/wiki/Mohlakase" title="Mohlakase – 塞索托文" lang="st" hreflang="st" data-title="Mohlakase" data-language-autonym="Sesotho" data-language-local-name="塞索托文" class="interlanguage-link-target"><span>Sesotho</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Elektrizit%C3%A4t" title="Elektrizität – 沙特菲士蘭文" lang="stq" hreflang="stq" data-title="Elektrizität" data-language-autonym="Seeltersk" data-language-local-name="沙特菲士蘭文" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Listrik" title="Listrik – 巽他文" lang="su" hreflang="su" data-title="Listrik" data-language-autonym="Sunda" data-language-local-name="巽他文" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Elektricitet" title="Elektricitet – 瑞典文" lang="sv" hreflang="sv" data-title="Elektricitet" data-language-autonym="Svenska" data-language-local-name="瑞典文" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Umeme" title="Umeme – 史瓦希里文" lang="sw" hreflang="sw" data-title="Umeme" data-language-autonym="Kiswahili" data-language-local-name="史瓦希里文" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AE%E0%AE%BF%E0%AE%A9%E0%AF%8D%E0%AE%9A%E0%AE%BE%E0%AE%B0%E0%AE%AE%E0%AF%8D" title="மின்சாரம் – 坦米爾文" lang="ta" hreflang="ta" data-title="மின்சாரம்" data-language-autonym="தமிழ்" data-language-local-name="坦米爾文" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B5%E0%B0%BF%E0%B0%A6%E0%B1%8D%E0%B0%AF%E0%B1%81%E0%B0%A4%E0%B1%8D%E0%B0%A4%E0%B1%81" title="విద్యుత్తు – 泰盧固文" lang="te" hreflang="te" data-title="విద్యుత్తు" data-language-autonym="తెలుగు" data-language-local-name="泰盧固文" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%84%E0%B8%9F%E0%B8%9F%E0%B9%89%E0%B8%B2" title="ไฟฟ้า – 泰文" lang="th" hreflang="th" data-title="ไฟฟ้า" data-language-autonym="ไทย" data-language-local-name="泰文" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Elektrisidad" title="Elektrisidad – 塔加路族文" lang="tl" hreflang="tl" data-title="Elektrisidad" data-language-autonym="Tagalog" data-language-local-name="塔加路族文" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tn mw-list-item"><a href="https://tn.wikipedia.org/wiki/Motlakase" title="Motlakase – 突尼西亞文" lang="tn" hreflang="tn" data-title="Motlakase" data-language-autonym="Setswana" data-language-local-name="突尼西亞文" class="interlanguage-link-target"><span>Setswana</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Elektrik" title="Elektrik – 土耳其文" lang="tr" hreflang="tr" data-title="Elektrik" data-language-autonym="Türkçe" data-language-local-name="土耳其文" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-ts mw-list-item"><a href="https://ts.wikipedia.org/wiki/Gezi" title="Gezi – 特松加文" lang="ts" hreflang="ts" data-title="Gezi" data-language-autonym="Xitsonga" data-language-local-name="特松加文" class="interlanguage-link-target"><span>Xitsonga</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80" title="Электр – 韃靼文" lang="tt" hreflang="tt" data-title="Электр" data-language-autonym="Татарча / tatarça" data-language-local-name="韃靼文" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tw mw-list-item"><a href="https://tw.wikipedia.org/wiki/%C6%90l%C9%9Bktrisiti" title="Ɛlɛktrisiti – 特威文" lang="tw" hreflang="tw" data-title="Ɛlɛktrisiti" data-language-autonym="Twi" data-language-local-name="特威文" class="interlanguage-link-target"><span>Twi</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D8%A6%DB%90%D9%84%DB%90%D9%83%D8%AA%D8%B1" title="ئېلېكتر – 維吾爾文" lang="ug" hreflang="ug" data-title="ئېلېكتر" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="維吾爾文" class="interlanguage-link-target"><span>ئۇيغۇرچە / Uyghurche</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%95%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%B8%D0%BA%D0%B0" title="Електрика – 烏克蘭文" lang="uk" hreflang="uk" data-title="Електрика" data-language-autonym="Українська" data-language-local-name="烏克蘭文" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%A8%D8%B1%D9%82" title="برق – 烏都文" lang="ur" hreflang="ur" data-title="برق" data-language-autonym="اردو" data-language-local-name="烏都文" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Elektr" title="Elektr – 烏茲別克文" lang="uz" hreflang="uz" data-title="Elektr" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="烏茲別克文" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Elektruz" title="Elektruz – 維普森文" lang="vep" hreflang="vep" data-title="Elektruz" data-language-autonym="Vepsän kel’" data-language-local-name="維普森文" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/%C4%90i%E1%BB%87n" title="Điện – 越南文" lang="vi" hreflang="vi" data-title="Điện" data-language-autonym="Tiếng Việt" data-language-local-name="越南文" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Elektrisidad" title="Elektrisidad – 瓦瑞文" lang="war" hreflang="war" data-title="Elektrisidad" data-language-autonym="Winaray" data-language-local-name="瓦瑞文" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/Mb%C3%ABj" title="Mbëj – 沃洛夫文" lang="wo" hreflang="wo" data-title="Mbëj" data-language-autonym="Wolof" data-language-local-name="沃洛夫文" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%94%B5" title="电 – 吳語" lang="wuu" hreflang="wuu" data-title="电" data-language-autonym="吴语" data-language-local-name="吳語" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%A2%D7%9C%D7%A2%D7%A7%D7%98%D7%A8%D7%99%D7%A2" title="עלעקטריע – 意第緒文" lang="yi" hreflang="yi" data-title="עלעקטריע" data-language-autonym="ייִדיש" data-language-local-name="意第緒文" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/%C3%8Ctann%C3%A1" title="Ìtanná – 約魯巴文" lang="yo" hreflang="yo" data-title="Ìtanná" data-language-autonym="Yorùbá" data-language-local-name="約魯巴文" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%9B%BB" title="電 – 中文" lang="zh" hreflang="zh" data-title="電" data-language-autonym="中文" data-language-local-name="中文" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Ti%C4%81n-kh%C3%AC" title="Tiān-khì – 閩南語" lang="nan" hreflang="nan" data-title="Tiān-khì" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="閩南語" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/Amazuba" title="Amazuba – 祖魯文" lang="zu" hreflang="zu" data-title="Amazuba" data-language-autonym="IsiZulu" data-language-local-name="祖魯文" class="interlanguage-link-target"><span>IsiZulu</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q12725#sitelinks-wikipedia" title="改跨語言拎" class="wbc-editpage">改拎</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="空間名"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%E9%9B%BB" title="睇吓內容頁[c]" accesskey="c"><span>文章</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Talk:%E9%9B%BB&action=edit&redlink=1" rel="discussion" class="new" title="關於內容頁嘅討論 (無呢版)[t]" accesskey="t"><span>討論</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="改語言變體" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">粵語</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="外觀"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%E9%9B%BB"><span>閱</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E9%9B%BB&action=edit" title="改呢版嘅代碼[e]" accesskey="e"><span>改</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E9%9B%BB&action=history" title="呢一頁之前嘅修訂[h]" accesskey="h"><span>睇返紀錄</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="頁面工具"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="架撐" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">架撐</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">架撐</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">移去側欄</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">收埋</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="多啲選項" > <div class="vector-menu-heading"> 動作 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/%E9%9B%BB"><span>閱</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%E9%9B%BB&action=edit" title="改呢版嘅代碼[e]" accesskey="e"><span>改</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%E9%9B%BB&action=history"><span>睇返紀錄</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> 基本 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:%E9%82%8A%E5%BA%A6%E9%8F%88%E5%8E%BB%E5%91%A2%E7%89%88/%E9%9B%BB" title="列出所有連接過嚟呢度嘅頁面[j]" accesskey="j"><span>有乜連過嚟</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:%E5%A4%96%E9%8F%88%E4%BF%AE%E6%94%B9/%E9%9B%BB" rel="nofollow" title="由呢版連出去嘅版嘅最近修改[k]" accesskey="k"><span>連結頁嘅更改</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Project:%E4%B8%8A%E8%BC%89" title="上載檔案[u]" accesskey="u"><span>上載檔案</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:%E5%B0%88%E9%96%80%E7%89%88" title="所有專門版一覽[q]" accesskey="q"><span>專門版</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=%E9%9B%BB&oldid=2149205" title="呢版呢個修訂嘅永久網址"><span>固定連結</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=%E9%9B%BB&action=info" title="多啲同呢版有拏褦嘅資料"><span>此版明細</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:%E5%BC%95%E7%94%A8&page=%E9%9B%BB&id=2149205&wpFormIdentifier=titleform" title="點樣引用呢頁嘅資訊"><span>引用呢篇文</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fzh-yue.wikipedia.org%2Fwiki%2F%25E9%259B%25BB"><span>攞短網址</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fzh-yue.wikipedia.org%2Fwiki%2F%25E9%259B%25BB"><span>下載QR code</span></a></li> </ul> </div> </div> <div id="p-electronpdfservice-sidebar-portlet-heading" class="vector-menu mw-portlet mw-portlet-electronpdfservice-sidebar-portlet-heading" > <div class="vector-menu-heading"> 打印/匯出 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="electron-print_pdf" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=%E9%9B%BB&action=show-download-screen"><span>下載PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="javascript:print();" rel="alternate" title="呢一版印得嘅版本[p]" accesskey="p"><span>印得嘅版本</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> 第啲維基項目 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Electricity" hreflang="en"><span>維基同享</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q12725" title="連到接住資料儲存庫嘅項目[g]" accesskey="g"><span>維基數據項</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="頁面工具"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="閱讀設定"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">閱讀設定</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">移去側欄</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">收埋</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">出自維基百科，自由嘅百科全書</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="yue" dir="ltr"><dl><dd><i>呢度講電氣嘅電，如果想睇天氣嘅電，睇<a href="/wiki/%E9%96%83%E9%9B%BB" title="閃電">閃電</a></i></dd></dl> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Lightning_NOAA.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Lightning_NOAA.jpg/250px-Lightning_NOAA.jpg" decoding="async" width="250" height="168" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Lightning_NOAA.jpg/375px-Lightning_NOAA.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Lightning_NOAA.jpg/500px-Lightning_NOAA.jpg 2x" data-file-width="1808" data-file-height="1216" /></a><figcaption>閃電</figcaption></figure> <p><b>電</b>（<a href="/wiki/Wikipedia:%E7%B2%B5%E6%96%87%E6%8B%BC%E9%9F%B3" title="Wikipedia:粵文拼音">粵拼</a>：<span class="plainlinks" style="display:inline-block"><a rel="nofollow" class="external text" href="http://yue.forvo.com/word/yue/電/#yue"><span>din<span class="Jpingtone">6</span></span></a></span>），又叫<b>電氣</b>（<a href="/wiki/Wikipedia:%E7%B2%B5%E6%96%87%E6%8B%BC%E9%9F%B3" title="Wikipedia:粵文拼音">粵拼</a>：<span class="plainlinks" style="display:inline-block"><a rel="nofollow" class="external text" href="http://yue.forvo.com/word/yue/電/#yue"><span>din<span class="Jpingtone">6</span> hei<span class="Jpingtone">3</span></span></a></span>），係<a href="/wiki/%E7%89%A9%E8%B3%AA" title="物質">物質</a>性質，講物質帶<a href="/wiki/%E9%9B%BB%E8%8D%B7" title="電荷">電荷</a>又或有電荷郁。夾埋<a href="/wiki/%E7%A3%81" title="磁">磁</a>，即係<a href="/wiki/%E9%9B%BB%E7%A3%81" class="mw-redirect" title="電磁">電磁</a>，係物質基本<a href="/wiki/%E7%9B%B8%E4%BA%92%E4%BD%9C%E7%94%A8" class="mw-redirect" title="相互作用">相互作用</a>之一。<a href="/wiki/%E9%96%83%E9%9B%BB" title="閃電">閃電</a>，<a href="/wiki/%E9%9B%BB%E5%A0%B4" title="電場">電場</a>，同<a href="/wiki/%E9%9B%BB%E6%B5%81" title="電流">電流</a>都係同電有關，同好出名嘅物理現象。<a href="/w/index.php?title=%E9%9B%BB%E5%AD%90(%E6%87%89%E7%94%A8)&action=edit&redlink=1" class="new" title="電子(應用) (無呢版)">電子</a>同<a href="/wiki/%E9%9B%BB%E5%8A%9B" title="電力">電力</a>都佢喺工業上嘅應用。 </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="電荷"><span id=".E9.9B.BB.E8.8D.B7"></span>電荷</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=1" title="編輯小節: 電荷"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <div role="note" class="hatnote">内文：<a href="/wiki/%E9%9B%BB%E8%8D%B7" title="電荷">電荷</a></div> <div role="note" class="hatnote">睇埋：<a href="/wiki/%E5%BA%AB%E4%BE%96%E5%AE%9A%E5%BE%8B" title="庫侖定律">庫侖定律</a></div> <p><a href="/wiki/%E9%9B%BB%E8%8D%B7" title="電荷">電荷</a>（electric charge）嘅概念係成個電磁學嘅根基，喺日常生活當中都可以觀察得到：電荷係由大約公元前 5 世紀嘅<a href="/wiki/%E5%8F%A4%E5%B8%8C%E8%87%98" title="古希臘">古希臘</a><a href="/wiki/%E6%95%B8%E5%AD%B8%E5%AE%B6" title="數學家">數學家</a><a href="/wiki/%E6%B3%B0%E5%8B%92%E6%96%AF" title="泰勒斯">泰勒斯</a>（Thales of Miletus）發現嘅，據講當時泰勒斯攞住<a href="/wiki/%E5%8B%95%E7%89%A9" title="動物">動物</a>嘅<a href="/wiki/%E6%AF%9B%E7%9A%AE" title="毛皮">毛皮</a>用力捽落去一嚿<a href="/wiki/%E7%90%A5%E7%8F%80" title="琥珀">琥珀</a>（amber；<a href="/wiki/%E5%B8%8C%E8%87%98%E6%96%87" title="希臘文">希臘文</a>：ηλεκτρόν，「electron」，變咗<a href="/wiki/%E5%8C%96%E7%9F%B3" title="化石">化石</a>嘅<a href="/wiki/%E6%A8%B9%E8%84%82" title="樹脂">樹脂</a>）嗰度，然後就發現嚿琥珀變到能夠吸引<a href="/wiki/%E7%BE%BD%E6%AF%9B" title="羽毛">羽毛</a>同<a href="/wiki/%E9%A0%AD%E9%AB%AE" title="頭髮">頭髮</a>等輕嘅物體－呢個就係所謂嘅<a href="/wiki/%E6%91%A9%E6%93%A6%E8%B5%B7%E9%9B%BB%E6%95%88%E6%87%89" title="摩擦起電效應">摩擦起電效應</a>（triboelectric effect）<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>，而現代人日常生活當中有機會接觸到、可以攞嚟做摩擦起電嘅物料就包括咗<a href="/wiki/%E7%A1%AB" title="硫">硫</a>、<a href="/wiki/%E6%9C%A8" title="木">木</a>同<a href="/wiki/%E7%99%BC%E6%B3%A1%E8%86%A0" title="發泡膠">發泡膠</a>等。喺一嚿物體上靜止唔<a href="/wiki/%E9%83%81%E5%8B%95" class="mw-redirect" title="郁動">郁</a>嘅電荷就係所謂嘅<a href="/wiki/%E9%9D%9C%E9%9B%BB" title="靜電">靜電</a>（static electricity）<sup id="cite_ref-physicsclassroom_2-0" class="reference"><a href="#cite_note-physicsclassroom-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>。 </p><p>由對靜電嘅觀察嗰度可以得知以下嘅事實<sup id="cite_ref-physicsclassroom_2-1" class="reference"><a href="#cite_note-physicsclassroom-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>： </p> <ul><li>將一大柞物體捽到起靜電之後，就會發現嗰啲物體當中有啲會互相吸引，有啲會互相排斥，而且仲會有得將呢柞物體分做兩大組－同一組入面嘅物體都會互相排斥，而且冚唪唥都會同第組嗰啲物體起吸引；可以作出嘅一個推斷係，電荷有得分兩種－就噉叫佢哋做「正電荷」同「負電荷」先，同性電荷會互相排斥，而異性會互相吸引，一件總體上唔帶電荷<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>註 1<span class="cite-bracket">]</span></a></sup>嘅物體就係所謂嘅<a href="/wiki/%E9%9B%BB%E4%B8%AD%E6%80%A7" class="mw-redirect" title="電中性">中性</a>（neutral）；</li> <li>除此之外，當兩嚿帶好勁<a href="/wiki/%E9%9D%9C%E9%9B%BB%E8%8D%B7" class="mw-redirect" title="靜電荷">靜電荷</a>、而且唔同性嘅物體掂埋一齊或者擺得好近嗰陣，佢哋之間可以產生一股突然嘅<a href="/wiki/%E5%85%89" title="光">光</a>同<a href="/wiki/%E7%86%B1" title="熱">熱</a>，喺呢個過程完咗之後，兩嚿物體就唔再帶電或者帶嘅電會變弱咗－由呢個觀察可以作出嘅一個推斷係，只要兩嚿物體相隔唔係太遠，電荷就有可能喺嗰兩嚿物體之間郁動，而正負電荷會互相抵消（順帶一提，呢個現象就係所謂嘅<a href="/wiki/%E9%9D%9C%E9%9B%BB%E6%94%BE%E9%9B%BB" title="靜電放電">靜電放電</a>；electrostatic discharge）<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>。</li></ul> <div class="mw-heading mw-heading2"><h2 id="電嘅概念"><span id=".E9.9B.BB.E5.98.85.E6.A6.82.E5.BF.B5"></span>電嘅概念</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=2" title="編輯小節: 電嘅概念"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Electrostatic_definition_of_voltage.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Electrostatic_definition_of_voltage.svg/300px-Electrostatic_definition_of_voltage.svg.png" decoding="async" width="300" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/25/Electrostatic_definition_of_voltage.svg/450px-Electrostatic_definition_of_voltage.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/25/Electrostatic_definition_of_voltage.svg/600px-Electrostatic_definition_of_voltage.svg.png 2x" data-file-width="560" data-file-height="560" /></a><figcaption>將一個粒子 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle Q}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>Q</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle Q}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8752c7023b4b3286800fe3238271bbca681219ed" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.838ex; height:2.509ex;" alt="{\displaystyle Q}"></span> 產生嘅電場<a href="/wiki/%E6%8A%BD%E8%B1%A1%E5%8C%96" title="抽象化">抽象化</a>嘅圖；圖入面嗰啲線（電場線）表達咗股電場產生嘅力嘅方向。一粒帶電粒子 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>q</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/06809d64fa7c817ffc7e323f85997f783dbdf71d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.07ex; height:2.009ex;" alt="{\displaystyle q}"></span> 要喺呢個電場入面郁就要<a href="/wiki/%E4%BD%9C%E5%8A%9F" class="mw-redirect" title="作功">作功</a>－即係話會有<a href="/wiki/%E8%83%BD%E9%87%8F" title="能量">能量</a>俾 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>q</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/06809d64fa7c817ffc7e323f85997f783dbdf71d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.07ex; height:2.009ex;" alt="{\displaystyle q}"></span> 釋放或者吸收。</figcaption></figure> <div role="note" class="hatnote">睇埋：<a href="/wiki/%E9%9B%BB%E7%A3%81%E5%AD%B8" title="電磁學">電磁學</a></div> <p>有咗電荷嘅概念，就可以思考進一步嘅電相關概念： </p> <div class="mw-heading mw-heading3"><h3 id="電場"><span id=".E9.9B.BB.E5.A0.B4"></span>電場</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=3" title="編輯小節: 電場"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <div role="note" class="hatnote">内文：<a href="/wiki/%E9%9B%BB%E5%A0%B4" title="電場">電場</a></div> <p><a href="/wiki/%E9%9B%BB%E5%A0%B4" title="電場">電場</a>（electric field）係由電荷產生嘅<a href="/wiki/%E5%8A%9B%E5%A0%B4_(%E7%89%A9%E7%90%86)" title="力場 (物理)">力場</a>（force field）：當有一粒帶電粒子喺一個空間入面存在嗰陣，根據<a href="/wiki/%E5%BA%AB%E4%BE%96%E5%AE%9A%E5%BE%8B" title="庫侖定律">庫侖定律</a>，佢會對佢周圍嘅帶電粒子施力；力場<a href="/wiki/%E5%AE%9A%E7%BE%A9" title="定義">定義</a>上可以想像成一件數學物體，描述緊一股<a href="/wiki/%E9%9D%9E%E6%8E%A5%E8%A7%B8%E5%8A%9B" title="非接觸力">非接觸力</a>（non-contact force；指唔使掂到都可以施嘅<a href="/wiki/%E5%8A%9B" title="力">力</a>，例如係靜電力噉）對空間裏面唔同位置嘅粒子有乜影響。而「一粒帶電粒子 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q_{1}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q_{1}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9daa41f6e8f78ea6bb5711d7ac97901ce564b94e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.091ex; height:2.009ex;" alt="{\displaystyle q_{1}}"></span> 所產生嘅電場」（符號係「<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {E}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">E</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {E}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/fc7557c5b378c6d01d3a05f5b60c2700e782b9f1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.917ex; height:2.176ex;" alt="{\displaystyle {\boldsymbol {E}}}"></span>」）喺物理學上定義係「每單位電荷（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q_{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q_{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9d68d37de188ac61f0c0e3f31d5322d1c486f2f4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.091ex; height:2.009ex;" alt="{\displaystyle q_{0}}"></span>）喺呢個電場入面會因為 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q_{1}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q_{1}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9daa41f6e8f78ea6bb5711d7ac97901ce564b94e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.091ex; height:2.009ex;" alt="{\displaystyle q_{1}}"></span> 而受到嘅力」，即係話喺位置 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {x_{0}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">x</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">0</mn> </mrow> </msub> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {x_{0}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/eef61bd7b0399664ceab99fdf78c7de593c9e860" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.709ex; height:2.009ex;" alt="{\displaystyle {\boldsymbol {x_{0}}}}"></span> 嘅電場會係<sup id="cite_ref-feynman1_6-0" class="reference"><a href="#cite_note-feynman1-6"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-roald_7-0" class="reference"><a href="#cite_note-roald-7"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>： </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {E}}({\boldsymbol {x_{0}}})={{\boldsymbol {F}} \over q_{0}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">E</mi> </mrow> <mo stretchy="false">(</mo> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">x</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">0</mn> </mrow> </msub> </mrow> <mo stretchy="false">)</mo> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">F</mi> </mrow> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {E}}({\boldsymbol {x_{0}}})={{\boldsymbol {F}} \over q_{0}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7cc3ecbd8e1edc88a567bb3b630290da0ecdd243" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:12.462ex; height:5.676ex;" alt="{\displaystyle {\boldsymbol {E}}({\boldsymbol {x_{0}}})={{\boldsymbol {F}} \over q_{0}}}"></span>（電場嘅定義）<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [3]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>3</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [3]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f671027d56f9c24d65c03a4a26eb0d3b933f4f15" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [3]}"></span>；代 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [2]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>2</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [2]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/aa32363c093f4cfd50ecba68068bcfd396ea8bff" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [2]}"></span> 落去嘅話就會變成</dd> <dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {E}}({\boldsymbol {x_{0}}})={k_{e}}{q_{1} \over ({\boldsymbol {x_{1}-x_{0}}})^{2}}{\boldsymbol {{\hat {r}}_{\text{1,0}}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">E</mi> </mrow> <mo stretchy="false">(</mo> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">x</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">0</mn> </mrow> </msub> </mrow> <mo stretchy="false">)</mo> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi>k</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> </mrow> </msub> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> <mrow> <mo stretchy="false">(</mo> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">x</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">1</mn> </mrow> </msub> <mo mathvariant="bold">−</mo> <msub> <mi mathvariant="bold-italic">x</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">0</mn> </mrow> </msub> </mrow> <msup> <mo stretchy="false">)</mo> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mrow> </mfrac> </mrow> <mrow class="MJX-TeXAtom-ORD"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mover> <mi mathvariant="bold-italic">r</mi> <mo mathvariant="bold" stretchy="false">^</mo> </mover> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mtext>1,0</mtext> </mrow> </msub> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {E}}({\boldsymbol {x_{0}}})={k_{e}}{q_{1} \over ({\boldsymbol {x_{1}-x_{0}}})^{2}}{\boldsymbol {{\hat {r}}_{\text{1,0}}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7743eca4761f8829ccbea1a5b52a08e0ed774a74" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.671ex; width:27.79ex; height:5.676ex;" alt="{\displaystyle {\boldsymbol {E}}({\boldsymbol {x_{0}}})={k_{e}}{q_{1} \over ({\boldsymbol {x_{1}-x_{0}}})^{2}}{\boldsymbol {{\hat {r}}_{\text{1,0}}}}}"></span>。<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [4]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>4</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [4]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3d865272ff436d713d5069ae3066bbe07a000a99" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [4]}"></span></dd></dl> <p>而<a href="/wiki/%E9%9B%BB%E9%80%9A%E9%87%8F" title="電通量">電通量</a>（electric flux）就係指一個表面當中嘅電場量。 </p><p>電場仲可以按「會唔會因時間而改變」分做兩種<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>： </p> <ul><li><a href="/wiki/%E9%9D%9C%E9%9B%BB%E5%A0%B4" class="mw-redirect" title="靜電場">靜電場</a>（electrostatic field）係指唔會隨<a href="/wiki/%E6%99%82%E9%96%93" title="時間">時間</a>改變嘅電場；喺現實世界當中，靜電場查實並唔存在，不過喺好多情況下，一嚿帶電嘅物體會俾人固定咗郁唔到，所以喺分析呢嚿物體嘅行為嗰陣，可以將嚿物體想像成定死咗唔會郁，並且將呢嚿物體施嗰個電場想像成一個靜電場。</li> <li><a href="/wiki/%E9%9B%BB%E5%8B%95%E5%8A%9B%E5%A0%B4" class="mw-redirect" title="電動力場">電動力場</a>（electrodynamic field）係指會隨時間改變嘅電場（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {E}}=f(t)}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">E</mi> </mrow> <mo>=</mo> <mi>f</mi> <mo stretchy="false">(</mo> <mi>t</mi> <mo stretchy="false">)</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {E}}=f(t)}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4fc70fc2a5293771100336b01eb056f491b41641" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:8.943ex; height:2.843ex;" alt="{\displaystyle {\boldsymbol {E}}=f(t)}"></span>，<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>t</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/65658b7b223af9e1acc877d848888ecdb4466560" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.84ex; height:2.009ex;" alt="{\displaystyle t}"></span> 係指時間），通常係因為帶電粒子喺度<a href="/wiki/%E9%83%81%E5%8B%95" class="mw-redirect" title="郁動">郁動</a>（郁動定義上係<a href="/wiki/%E4%BD%8D%E7%BD%AE" title="位置">位置</a>隨時間改變）；對電動力場嘅分析會用到<a href="/wiki/%E5%AE%89%E5%9F%B9%E5%AE%9A%E5%BE%8B" title="安培定律">安培定律</a>（Ampère's circuital law）等進一步嘅電磁相關概念同定律（睇下面）。</li></ul> <div style="clear: both;"></div> <div class="mw-heading mw-heading3"><h3 id="電壓"><span id=".E9.9B.BB.E5.A3.93"></span>電壓</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=4" title="編輯小節: 電壓"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <div role="note" class="hatnote">内文：<a href="/wiki/%E9%9B%BB%E5%A3%93" title="電壓">電壓</a></div> <p>當有兩嚿帶電嘅物體喺一個空間入面存在嗰陣，佢哋會喺對方身上施靜電力。噉嘅話，如果要對抗一股電場－即係分開異性嘅帶電粒子或者拉近同性嘅帶電粒子－就要施一啲外力落去個系統嗰度，即係要做<a href="/wiki/%E4%BD%9C%E5%8A%9F" class="mw-redirect" title="作功">作功</a>（work done）嚟去俾<a href="/wiki/%E8%83%BD%E9%87%8F" title="能量">能量</a>佢哋。兩個點 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbf {r} _{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbf {r} _{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/dbe39f0fedae3334af5c4ffaedf25c9778363400" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.156ex; height:2.009ex;" alt="{\displaystyle \mathbf {r} _{0}}"></span> 同 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbf {r} _{1}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbf {r} _{1}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c197b71f97673f419ea1a520594f9f7b7c2fe0ad" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.156ex; height:2.009ex;" alt="{\displaystyle \mathbf {r} _{1}}"></span> 之間嘅<a href="/wiki/%E9%9B%BB%E5%8B%A2%E5%B7%AE" class="mw-redirect" title="電勢差">電勢差</a>（electric potential difference）喺定義上係指「將一個單位嘅電荷由 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbf {r} _{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbf {r} _{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/dbe39f0fedae3334af5c4ffaedf25c9778363400" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.156ex; height:2.009ex;" alt="{\displaystyle \mathbf {r} _{0}}"></span> 移去 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbf {r} _{1}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbf {r} _{1}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c197b71f97673f419ea1a520594f9f7b7c2fe0ad" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.156ex; height:2.009ex;" alt="{\displaystyle \mathbf {r} _{1}}"></span> 嗰度（或者相反），同時粒電荷唔<a href="/wiki/%E5%8A%A0%E9%80%9F" class="mw-redirect" title="加速">加速</a>，所釋放或者吸收嘅能量」（唔加速表示<a href="/wiki/%E6%B7%A8%E5%8A%9B" title="淨力">淨力</a>係 0，詳情睇<a href="/wiki/%E7%89%9B%E9%A0%93%E7%AC%AC%E4%BA%8C%E5%AE%9A%E5%BE%8B" title="牛頓第二定律">牛頓第二定律</a>），即係話<a href="/wiki/%E7%B5%95%E5%B0%8D%E5%80%BC" title="絕對值">齋睇數值</a>嘅話<sup id="cite_ref-deme1969_9-0" class="reference"><a href="#cite_note-deme1969-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>： </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle W=\mathbf {F} \cdot \Delta \mathbf {r} \,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>W</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">F</mi> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle W=\mathbf {F} \cdot \Delta \mathbf {r} \,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8e0a24c969bff1f9df67e259bb63b0c2a4191e8c" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:12.321ex; height:2.176ex;" alt="{\displaystyle W=\mathbf {F} \cdot \Delta \mathbf {r} \,}"></span>（<a href="/wiki/%E4%BD%9C%E5%8A%9F" class="mw-redirect" title="作功">作功</a>嘅定義）；<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [5]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>5</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [5]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/958ef87021d704de46ad116821bc677e07d9a5fe" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [5]}"></span></dd></dl> <p>跟住呢條式，「將一粒帶電粒子 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q_{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q_{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9d68d37de188ac61f0c0e3f31d5322d1c486f2f4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.091ex; height:2.009ex;" alt="{\displaystyle q_{0}}"></span> 由 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbf {r} _{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbf {r} _{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/dbe39f0fedae3334af5c4ffaedf25c9778363400" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.156ex; height:2.009ex;" alt="{\displaystyle \mathbf {r} _{0}}"></span> 移去 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \mathbf {r} _{1}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">r</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \mathbf {r} _{1}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c197b71f97673f419ea1a520594f9f7b7c2fe0ad" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.156ex; height:2.009ex;" alt="{\displaystyle \mathbf {r} _{1}}"></span> 嗰度，而 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle q_{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle q_{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9d68d37de188ac61f0c0e3f31d5322d1c486f2f4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.091ex; height:2.009ex;" alt="{\displaystyle q_{0}}"></span> 唔加速，所釋放或者吸收嘅能量」（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle W_{0}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>W</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle W_{0}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7f541f57fd799ba5137a2e50a1a728dde4306c06" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:3.248ex; height:2.509ex;" alt="{\displaystyle W_{0}}"></span>）係： </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle W_{0}={{\boldsymbol {F_{0}}}\cdot \Delta \mathbf {dr} }+{{\boldsymbol {F_{1}}}\cdot \Delta \mathbf {dr} }+{{\boldsymbol {F_{2}}}\cdot \Delta \mathbf {dr} }+...\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>W</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">0</mn> </mrow> </msub> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mrow> <mo>+</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">1</mn> </mrow> </msub> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mrow> <mo>+</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">2</mn> </mrow> </msub> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mrow> <mo>+</mo> <mo>.</mo> <mo>.</mo> <mo>.</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle W_{0}={{\boldsymbol {F_{0}}}\cdot \Delta \mathbf {dr} }+{{\boldsymbol {F_{1}}}\cdot \Delta \mathbf {dr} }+{{\boldsymbol {F_{2}}}\cdot \Delta \mathbf {dr} }+...\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/bff5ebef7f2d71bd7938d024ad8bb39a7d3f0460" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:43.881ex; height:2.509ex;" alt="{\displaystyle W_{0}={{\boldsymbol {F_{0}}}\cdot \Delta \mathbf {dr} }+{{\boldsymbol {F_{1}}}\cdot \Delta \mathbf {dr} }+{{\boldsymbol {F_{2}}}\cdot \Delta \mathbf {dr} }+...\,}"></span>。<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [6]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>6</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [6]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/162951515fcb56919dffe17b119f4a0aa7e9dae6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [6]}"></span></dd></dl> <p>喺 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [6]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>6</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [6]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/162951515fcb56919dffe17b119f4a0aa7e9dae6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [6]}"></span> 呢條式當中，<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {F_{i}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">i</mi> </mrow> </msub> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {F_{i}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7f7577c6698d6b17d39bf3e779890e65f5a4f588" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.5ex; height:2.509ex;" alt="{\displaystyle {\boldsymbol {F_{i}}}}"></span> 係「喺 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle i}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>i</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle i}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/add78d8608ad86e54951b8c8bd6c8d8416533d20" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.802ex; height:2.176ex;" alt="{\displaystyle i}"></span> 嗰點嘅靜電力」，而 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \Delta \mathbf {dr} }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \Delta \mathbf {dr} }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0135bf3faca2ef50e9f6329a782a0cba9e46a346" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:4.523ex; height:2.176ex;" alt="{\displaystyle \Delta \mathbf {dr} }"></span> 係一個差唔多係等如 0 嘅<a href="/wiki/%E7%84%A1%E7%AA%AE%E5%B0%8F%E9%87%8F" title="無窮小量">無窮小量</a>，代表咗兩點之間嘅距離嘅一極細橛。基於 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [6]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>6</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [6]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/162951515fcb56919dffe17b119f4a0aa7e9dae6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [6]}"></span>，噉「將<b>一個單位嘅電荷</b>由個電場入面嘅一個點移去第個點嗰度，而粒電荷唔加速，所釋放或者吸收嘅能量」（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V_{\mathbf {E} }}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">E</mi> </mrow> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{\mathbf {E} }}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7062a0858269728e19c409cca631ed7e609619f4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.83ex; height:2.509ex;" alt="{\displaystyle V_{\mathbf {E} }}"></span>）就係 </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V_{\mathbf {E} }={{{\boldsymbol {F_{0}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+{{{\boldsymbol {F_{1}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+{{{\boldsymbol {F_{2}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+...\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">E</mi> </mrow> </mrow> </msub> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">0</mn> </mrow> </msub> </mrow> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mfrac> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mrow> <mo>+</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">1</mn> </mrow> </msub> </mrow> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mfrac> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mrow> <mo>+</mo> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow class="MJX-TeXAtom-ORD"> <msub> <mi mathvariant="bold-italic">F</mi> <mrow class="MJX-TeXAtom-ORD"> <mn mathvariant="bold">2</mn> </mrow> </msub> </mrow> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mfrac> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> </mrow> <mo>+</mo> <mo>.</mo> <mo>.</mo> <mo>.</mo> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{\mathbf {E} }={{{\boldsymbol {F_{0}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+{{{\boldsymbol {F_{1}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+{{{\boldsymbol {F_{2}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+...\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/71c5951de08dd81f1b2bc4ca66cbc911664973ad" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:45.971ex; height:5.676ex;" alt="{\displaystyle V_{\mathbf {E} }={{{\boldsymbol {F_{0}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+{{{\boldsymbol {F_{1}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+{{{\boldsymbol {F_{2}}} \over q_{0}}\cdot \Delta \mathbf {dr} }+...\,}"></span>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [7]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>7</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [7]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ae3ad60d04a4ab654d5432b8d207c296bc9157ba" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [7]}"></span>）－就係「電勢差」嘅定義；呢條式用<a href="/wiki/%E7%A9%8D%E5%88%86" title="積分">積分</a>（詳情睇<a href="/wiki/%E5%BE%AE%E7%A9%8D%E5%88%86" title="微積分">微積分</a>）形式寫出嚟嘅話係</dd></dl> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V_{\mathbf {E} }=\int _{C}{{\boldsymbol {F}} \over q_{0}}\cdot \Delta \mathbf {dr} \,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">E</mi> </mrow> </mrow> </msub> <mo>=</mo> <msub> <mo>∫</mo> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> </mrow> </msub> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">F</mi> </mrow> <msub> <mi>q</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>0</mn> </mrow> </msub> </mfrac> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{\mathbf {E} }=\int _{C}{{\boldsymbol {F}} \over q_{0}}\cdot \Delta \mathbf {dr} \,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e3738f93dec23916c4cf5bb8b5e448cb0e447283" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:18.606ex; height:5.676ex;" alt="{\displaystyle V_{\mathbf {E} }=\int _{C}{{\boldsymbol {F}} \over q_{0}}\cdot \Delta \mathbf {dr} \,}"></span>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [8]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>8</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [8]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f0373ce939c1f16322ce7388567feeb75976f4b9" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [8]}"></span>）；跟手代埋 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [3]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>3</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [3]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f671027d56f9c24d65c03a4a26eb0d3b933f4f15" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [3]}"></span> 落去就變做</dd></dl> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V_{\mathbf {E} }=\int _{C}\mathbf {E} \cdot \Delta \mathbf {dr} \,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">E</mi> </mrow> </mrow> </msub> <mo>=</mo> <msub> <mo>∫</mo> <mrow class="MJX-TeXAtom-ORD"> <mi>C</mi> </mrow> </msub> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">E</mi> </mrow> <mo>⋅</mo> <mi mathvariant="normal">Δ</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">d</mi> <mi mathvariant="bold">r</mi> </mrow> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{\mathbf {E} }=\int _{C}\mathbf {E} \cdot \Delta \mathbf {dr} \,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/89b9f36ac33ba8beab3c40263766dbbeafa50253" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:17.436ex; height:5.676ex;" alt="{\displaystyle V_{\mathbf {E} }=\int _{C}\mathbf {E} \cdot \Delta \mathbf {dr} \,}"></span>。<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [9]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>9</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [9]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/fcb3a6d44040e53101b9857c425f7ddc95d75488" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [9]}"></span></dd></dl> <p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [9]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>9</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [9]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/fcb3a6d44040e53101b9857c425f7ddc95d75488" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:2.456ex; height:2.843ex;" alt="{\displaystyle [9]}"></span> 呢條式用日常語言講如下：兩個相距 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\boldsymbol {\ell }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold-italic">ℓ</mi> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\boldsymbol {\ell }}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ce7d2aa497959d905b670ab7b0080d3f7b9d582d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; margin-left: -0.001ex; width:1.103ex; height:2.176ex;" alt="{\displaystyle {\boldsymbol {\ell }}}"></span> 咁遠嘅點之間嘅電勢差等如佢哋之間嘅電場沿住佢哋之間嗰段距離喺數值上嘅累積－呢種累積可以用積分嘅方法嚟計到出嚟；根據牛頓力學，如果要一粒粒子喺一個影響住佢嘅力場入面郁，粒粒子就要釋放能量（喺順住個力場行嗰陣）或者吸收能量（喺對抗個力場嚟行嗰陣）。同一道理，如果要一粒帶電粒子喺一個電場入面由一個點移去另一個點，佢就要釋放或者吸收能量。某一點嘅電勢正正係反映咗一個單位嘅電荷要擺喺嗰個位置唔郁所需嘅能量，而兩個點之間嘅電勢差就反映咗「將一個單位嘅電荷由個電場入面嘅一個點移去另一個點嗰度，而粒電荷唔加速，所釋放或者吸收嘅能量」－呢個數字喺定義上就係嗰兩個點之間嘅<a href="/wiki/%E9%9B%BB%E5%A3%93" title="電壓">電壓</a>（voltage）<sup id="cite_ref-deme1969_9-1" class="reference"><a href="#cite_note-deme1969-9"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>。 </p> <div class="mw-heading mw-heading3"><h3 id="電流"><span id=".E9.9B.BB.E6.B5.81"></span>電流</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=5" title="編輯小節: 電流"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <div role="note" class="hatnote">内文：<a href="/wiki/%E9%9B%BB%E6%B5%81" title="電流">電流</a></div> <p>如果一個空間裏面有股電場嘅話，個空間入面嘅帶電粒子就會感受到靜電力，而根據<a href="/wiki/%E7%89%9B%E9%A0%93%E7%AC%AC%E4%BA%8C%E5%AE%9A%E5%BE%8B" title="牛頓第二定律">牛頓第二定律</a>（Newton's second law），當有股力作用喺一嚿有<a href="/wiki/%E8%B3%AA%E9%87%8F" title="質量">質量</a>嘅物體身上，後者就會有個<a href="/wiki/%E5%8A%A0%E9%80%9F%E5%BA%A6" title="加速度">加速度</a>－即係本來唔郁嘅嘢會郁。所以受到靜電力嘅帶電粒子，假設佢哋冇受乜第啲外力嘅話，一受到電場影響就會自然流動，並且由高電勢嘅地方流去低電勢嘅。<a href="/wiki/%E9%9B%BB%E6%B5%81" title="電流">電流</a>（electric current；<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle I}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>I</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle I}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/535ea7fc4134a31cbe2251d9d3511374bc41be9f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.172ex; height:2.176ex;" alt="{\displaystyle I}"></span>）指嘅就係電荷嘅流動，「某個空間嘅電流」喺定義上係「喺嗰個空間入面、每單位時間流過嘅電荷量」，當中電荷量以<a href="/wiki/%E5%BA%AB%E4%BE%96" class="mw-redirect" title="庫侖">庫侖</a>做單位嚟計，而方向會寫做正電荷會流動嘅方向。呢個概念用<a href="/wiki/%E6%96%B9%E7%A8%8B%E5%BC%8F" title="方程式">方程式</a>表達就係<sup id="cite_ref-ampere_11-0" class="reference"><a href="#cite_note-ampere-11"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>： </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle I={Q \over t}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>I</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>Q</mi> <mi>t</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle I={Q \over t}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/413c0c09d5cb9e8785071b3160897ba87f4bb672" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:6.945ex; height:5.343ex;" alt="{\displaystyle I={Q \over t}}"></span>，當中 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle t}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>t</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle t}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/65658b7b223af9e1acc877d848888ecdb4466560" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:0.84ex; height:2.009ex;" alt="{\displaystyle t}"></span> 係時間，而 <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle Q}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>Q</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle Q}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/8752c7023b4b3286800fe3238271bbca681219ed" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:1.838ex; height:2.509ex;" alt="{\displaystyle Q}"></span> 係喺嗰段時間流經個空間嘅電荷量。<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [10]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>10</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [10]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/cbbff6612d63e1c78af2fd62335e8ceb487ac57a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:3.619ex; height:2.843ex;" alt="{\displaystyle [10]}"></span></dd></dl> <p>電流嘅單位喺國際單位制嗰度係<a href="/wiki/%E5%AE%89%E5%9F%B9" title="安培">安培</a>（Ampere）<sup id="cite_ref-ampere_11-1" class="reference"><a href="#cite_note-ampere-11"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>。 </p> <figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:Direzione_convenzionale_della_corrente_elettrica.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Direzione_convenzionale_della_corrente_elettrica.svg/510px-Direzione_convenzionale_della_corrente_elettrica.svg.png" decoding="async" width="510" height="203" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Direzione_convenzionale_della_corrente_elettrica.svg/765px-Direzione_convenzionale_della_corrente_elettrica.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Direzione_convenzionale_della_corrente_elettrica.svg/1020px-Direzione_convenzionale_della_corrente_elettrica.svg.png 2x" data-file-width="677" data-file-height="269" /></a><figcaption>電流嘅抽象圖解；有電場存在就表示啲帶電粒子會受力，而根據牛頓第二定律，任何嘢受非 0 嘅淨力都會有個加速度。</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="電阻"><span id=".E9.9B.BB.E9.98.BB"></span>電阻</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=6" title="編輯小節: 電阻"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <div role="note" class="hatnote">内文：<a href="/wiki/%E9%9B%BB%E9%98%BB" title="電阻">電阻</a>同<a href="/wiki/%E9%9B%BB%E9%98%BB%E6%8A%97" title="電阻抗">電阻抗</a></div> <p>實驗結果顯示，假設第啲因素冚唪唥唔變，兩個點之間嘅電流同兩點之間嗰個電壓成<a href="/wiki/%E6%AD%A3%E6%AF%94" class="mw-redirect" title="正比">正比</a>。呢點好符合直覺，但就算兩個點之間嘅電壓唔變，佢哋之間嘅電流都仲有可能會變－例如係如果將兩個點連埋一齊嘅<a href="/wiki/%E9%9B%BB%E7%B7%9A" title="電線">電線</a>用嘅物料唔同咗，電流經已會唔同咗。於是就電磁學就有咗<a href="/wiki/%E9%9B%BB%E9%98%BB" title="電阻">電阻</a>（electrical resistance；<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle R}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>R</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle R}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/4b0bfb3769bf24d80e15374dc37b0441e2616e33" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.764ex; height:2.176ex;" alt="{\displaystyle R}"></span>）呢個概念，喺定義上，電阻係<sup id="cite_ref-millikan1917_12-0" class="reference"><a href="#cite_note-millikan1917-12"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup>： </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle R={V \over I}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>R</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>V</mi> <mi>I</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle R={V \over I}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7153d9daf4405df7b577af6182bf010039e2dbb2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:7.486ex; height:5.176ex;" alt="{\displaystyle R={V \over I}}"></span>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [11]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>11</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [11]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d426f0c2ea60bca9bd8523f49ed8c75aaebd6b6c" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:3.619ex; height:2.843ex;" alt="{\displaystyle [11]}"></span>）；執吓會變做</dd></dl> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V=IR}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mi>I</mi> <mi>R</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V=IR}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3604da12028748671ffe4d4feef5d28092d455dc" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:7.821ex; height:2.176ex;" alt="{\displaystyle V=IR}"></span>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle [12]}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo stretchy="false">[</mo> <mn>12</mn> <mo stretchy="false">]</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle [12]}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9bb78fb91ce38053821d154b651d89dcc21f2f5d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:3.619ex; height:2.843ex;" alt="{\displaystyle [12]}"></span>）；呢條就係所謂嘅<a href="/wiki/%E6%AD%90%E5%A7%86%E5%AE%9A%E5%BE%8B" title="歐姆定律">歐姆定律</a>（Ohm's law）。</dd></dl> <p>電阻顧名思義，可以想像成一個空間對電流有幾強嘅阻力，係國際單位制嗰度嘅單位係<a href="/wiki/%E6%AD%90%E5%A7%86" title="歐姆">歐姆</a>（Ohm，<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \omega }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>ω</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \omega }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/48eff443f9de7a985bb94ca3bde20813ea737be8" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.446ex; height:1.676ex;" alt="{\displaystyle \omega }"></span>），電阻嘅數值愈大，就表示要施一個愈強嘅電壓落去先至產生到一股特定嘅電流。要估計一嚿物體嘅電阻，就要喺嚿物體兩端施加一個已知數值嘅電壓，再量度吓跟住個電壓所產生嘅電流有幾勁。一嚿物體嘅電阻由好多因素決定，包括係嚿物體嘅物料同埋<a href="/wiki/%E9%95%B7%E5%BA%A6" title="長度">長度</a>呀噉，好似係<a href="/wiki/%E9%87%91%E5%B1%AC" title="金屬">金屬</a>就出咗名電阻低，導電性能良好<sup id="cite_ref-millikan1917_12-1" class="reference"><a href="#cite_note-millikan1917-12"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>。 </p><p>電阻嘅概念可以<a href="/wiki/%E5%BB%A3%E7%BE%A9%E5%8C%96" title="廣義化">廣義化</a>成<a href="/wiki/%E9%9B%BB%E9%98%BB%E6%8A%97" title="電阻抗">電阻抗</a>（electrical impedance；<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle Z}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>Z</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle Z}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1cc6b75e09a8aa3f04d8584b11db534f88fb56bd" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.68ex; height:2.176ex;" alt="{\displaystyle Z}"></span>）。一個空間嘅電阻抗都係反映緊嗰個空間對電流造成幾大阻礙，不過電阻抗仲會有個<a href="/wiki/%E7%9B%B8%E4%BD%8D" title="相位">相位</a>（phase，<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \theta }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>θ</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \theta }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6e5ab2664b422d53eb0c7df3b87e1360d75ad9af" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.09ex; height:2.176ex;" alt="{\displaystyle \theta }"></span>）：電阻淨係得一個數值，反映個空間對電流造成幾大阻礙，而呢個數值係不變嘅；不過喺好多現實應用當中，一個空間對電流造成嘅阻礙會<a href="/wiki/%E9%80%B1%E6%9C%9F%E6%80%A7" class="mw-redirect" title="週期性">週期性</a>噉變化，而一個電阻抗會有兩個數值－第一個數值反映個空間對電流造成嘅阻礙，而第二個數值係相位，反映個空間現時「處於週期嘅邊一個點」，即係話電阻可以想像成唔會週期性變化嘅電阻抗（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \forall \theta ,R={\text{constant}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi mathvariant="normal">∀</mi> <mi>θ</mi> <mo>,</mo> <mi>R</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mtext>constant</mtext> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \forall \theta ,R={\text{constant}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c1371cd8183f31b68c8a0ddb37b7c5cbbf799521" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:16.947ex; height:2.509ex;" alt="{\displaystyle \forall \theta ,R={\text{constant}}}"></span>）<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>。 </p> <div class="mw-heading mw-heading2"><h2 id="註釋"><span id=".E8.A8.BB.E9.87.8B"></span>註釋</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=7" title="編輯小節: 註釋"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r2020813">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">通常係因為佢帶嘅正電荷同負電荷相等。</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="參考資料"><span id=".E5.8F.83.E8.80.83.E8.B3.87.E6.96.99"></span>參考資料</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=8" title="編輯小節: 參考資料"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r2020813"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">Seyam, A. M., Oxenham, W., & Theyson, T. (2015). Antistatic and electrically conductive finishes for textiles. In <i>Functional finishes for textiles</i> (pp. 513-553). Woodhead Publishing.</span> </li> <li id="cite_note-physicsclassroom-2"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-physicsclassroom_2-0">2.0</a></sup> <sup><a href="#cite_ref-physicsclassroom_2-1">2.1</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.physicsclassroom.com/class/estatics/Lesson-2/Charging-by-Friction">Triboelectric Charging</a>. <i>Physics Classroom</i>.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Heathcote, Niels H. de V. (1967). "The early meaning of electricity: Some Pseudodoxia Epidemica – I". <i>Annals of Science</i>. 23 (4): 261.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">"<a rel="nofollow" class="external text" href="https://incompliancemag.com/article/fundamentals-of-electrostatic-discharge-part-three-basic-esd-control-procedures-and-materials/">Fundamentals of Electrostatic Discharge</a>". In <i>Compliance Magazine</i>. May 1, 2015.</span> </li> <li id="cite_note-feynman1-6"><span class="mw-cite-backlink"><a href="#cite_ref-feynman1_6-0">↑</a></span> <span class="error mw-ext-cite-error" lang="yue" dir="ltr">引用錯誤無效嘅<code><ref></code>標籤；無文字提供畀叫做<code>feynman1</code>嘅參照</span></li> <li id="cite_note-roald-7"><span class="mw-cite-backlink"><a href="#cite_ref-roald_7-0">↑</a></span> <span class="error mw-ext-cite-error" lang="yue" dir="ltr">引用錯誤無效嘅<code><ref></code>標籤；無文字提供畀叫做<code>roald</code>嘅參照</span></li> <li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text">Purcell, Edward; Morin, David (2013). <i>ELECTRICITY AND MAGNETISM</i> (3rd ed.). Cambridge University Press, New York. p. 5-7.</span> </li> <li id="cite_note-deme1969-9"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-deme1969_9-0">8.0</a></sup> <sup><a href="#cite_ref-deme1969_9-1">8.1</a></sup></span> <span class="reference-text">Demetrius T. Paris and F. Kenneth Hurd, <i>Basic Electromagnetic Theory</i>, McGraw-Hill, New York 1969, pp. 512, 546.</span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text">R. Feynman; et al. "<a rel="nofollow" class="external text" href="https://www.feynmanlectures.caltech.edu/II_22.html">The Feynman Lectures on Physics Vol. II Ch. 22: AC Circuits</a>". <i>Caltech</i>.</span> </li> <li id="cite_note-ampere-11"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-ampere_11-0">10.0</a></sup> <sup><a href="#cite_ref-ampere_11-1">10.1</a></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.physicsclassroom.com/class/circuits/Lesson-2/Electric-Current">The Physics Classroom - Electric Current</a>.</span> </li> <li id="cite_note-millikan1917-12"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-millikan1917_12-0">11.0</a></sup> <sup><a href="#cite_ref-millikan1917_12-1">11.1</a></sup></span> <span class="reference-text">Robert A. Millikan and E. S. Bishop (1917). <i>Elements of Electricity</i>. American Technical Society. p. 54. "Ohm's law current directly proportional".</span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><a href="#cite_ref-13">↑</a></span> <span class="reference-text">Olivier Darrigol, <i>Electrodynamics from Ampère to Einstein</i>, p. 70, Oxford University Press, 2000.</span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><a href="#cite_ref-14">↑</a></span> <span class="reference-text">Alexander, Charles; Sadiku, Matthew (2006). <i>Fundamentals of Electric Circuits</i> (3, revised ed.). McGraw-Hill. pp. 387–389.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="外部連結"><span id=".E5.A4.96.E9.83.A8.E9.80.A3.E7.B5.90"></span>外部連結</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%BB&action=edit&section=9" title="編輯小節: 外部連結"><span>編輯</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r2018312">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r2018311">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist"><a href="https://commons.wikimedia.org/wiki/%E9%A0%AD%E7%89%88" class="extiw" title="commons:頭版">維基同享</a>有多媒體嘅嘢：<br /> <b><a href="https://commons.wikimedia.org/wiki/electricity" class="extiw" title="commons:electricity">電</a></b></div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.ibiblio.org/kuphaldt/electricCircuits/DC/DC_1.html"><i>Basic Concepts of Electricity</i></a> chapter from <a rel="nofollow" class="external text" href="http://www.ibiblio.org/kuphaldt/electricCircuits/DC/index.html"><i>Lessons In Electric Circuits Vol 1 DC</i></a> book and <a rel="nofollow" class="external text" href="http://www.ibiblio.org/kuphaldt/electricCircuits/">series</a>.</li> <li><a rel="nofollow" class="external text" href="https://books.google.com/books?id=n-MDAAAAMBAJ&pg=PA772">"One-Hundred Years of Electricity", May 1931, Popular Mechanics</a></li> <li><a rel="nofollow" class="external text" href="http://www.hometips.com/hyhw/electrical/electric.html">Illustrated view of how an American home's electrical system works</a></li> <li><a rel="nofollow" class="external text" href="https://www.worldstandards.eu/electricity/plugs-and-sockets/">Socket and plug standards</a></li> <li><a rel="nofollow" class="external text" href="http://amasci.com/miscon/elect.html">Electricity Misconceptions</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20151201064159/http://www.micro.magnet.fsu.edu/electromag/java/diode/index.html">Electricity and Magnetism</a></li> <li><a rel="nofollow" class="external text" href="http://steverose.com/Articles/UnderstandingBasicElectri.html">Understanding Electricity and Electronics in about 10 Minutes</a></li></ul> <div role="navigation" class="navbox" aria-labelledby="電磁學（古典電磁學）" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><a href="/wiki/Template:%E9%9B%BB%E7%A3%81%E5%AD%B8" title="Template:電磁學"><abbr title="去睇呢個模" style=";;background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;">睇</abbr></a></li><li class="nv-talk"><a href="/w/index.php?title=Template_talk:%E9%9B%BB%E7%A3%81%E5%AD%B8&action=edit&redlink=1" class="new" title="Template talk:電磁學 (無呢版)"><abbr title="傾呢個模" style=";;background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;">傾</abbr></a></li><li class="nv-edit"><a class="external text" href="https://zh-yue.wikipedia.org/w/index.php?title=Template:%E9%9B%BB%E7%A3%81%E5%AD%B8&action=edit"><abbr title="編輯呢個模" style=";;background:none transparent;border:none;-moz-box-shadow:none;-webkit-box-shadow:none;box-shadow:none; padding:0;">改</abbr></a></li></ul></div><div id="電磁學（古典電磁學）" style="font-size:114%;margin:0 4em"><a href="/wiki/%E9%9B%BB%E7%A3%81%E5%AD%B8" title="電磁學">電磁學</a>（<a href="/wiki/%E5%8F%A4%E5%85%B8%E9%9B%BB%E7%A3%81%E5%AD%B8" title="古典電磁學">古典電磁學</a>）</div></th></tr><tr><td class="navbox-abovebelow" colspan="3"><div id="研究電同磁嘅物理學領域">研究<a class="mw-selflink selflink">電</a>同<a href="/wiki/%E7%A3%81" title="磁">磁</a>嘅<a href="/wiki/%E7%89%A9%E7%90%86%E5%AD%B8" title="物理學">物理學</a>領域</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">重要概念</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;padding-left:0em;padding-right:0em;"><div style="padding:0em 0.75em;"><a href="/wiki/%E9%9D%9C%E9%9B%BB%E5%AD%B8" title="靜電學">靜電學</a></div></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E6%91%A9%E6%93%A6%E8%B5%B7%E9%9B%BB%E6%95%88%E6%87%89" title="摩擦起電效應">摩擦起電</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E8%8D%B7" title="電荷">電荷</a>（<a href="/wiki/%E9%9B%BB%E8%8D%B7%E5%AF%86%E5%BA%A6" title="電荷密度">密度</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9D%9C%E9%9B%BB" title="靜電">靜電</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%A0%B4" title="電場">電場</a>（<a href="/wiki/%E9%9B%BB%E9%80%9A%E9%87%8F" title="電通量">電通量</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E9%9B%99%E6%A5%B5" title="電雙極">電雙極</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%A3%93" title="電壓">電壓</a>（<a href="/wiki/%E9%9B%BB%E5%8B%A2%E8%83%BD" title="電勢能">電勢能</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9D%9C%E9%9B%BB%E6%84%9F%E6%87%89" title="靜電感應">靜電感應</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%AE%B9%E7%8E%87" title="電容率">電容率</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%B0%8E%E9%9B%BB%E9%AB%94" title="導電體">導電體</a>同<a href="/wiki/%E7%B5%95%E7%B7%A3%E9%AB%94" title="絕緣體">絕緣體</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;padding-left:0em;padding-right:0em;"><div style="padding:0em 0.75em;"><a href="/wiki/%E9%9D%9C%E7%A3%81%E5%AD%B8" title="靜磁學">靜磁學</a></div></th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E7%A3%81%E5%A0%B4" title="磁場">磁場</a>（<a href="/wiki/%E7%A3%81%E9%80%9A%E9%87%8F" title="磁通量">磁通量</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%8F%B3%E6%89%8B%E8%A6%8F%E5%89%87" title="右手規則">右手規則</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E7%A3%81%E6%84%9F%E6%87%89" title="電磁感應">電磁感應</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%B4%9B%E5%80%AB%E8%8C%B2%E5%8A%9B" title="洛倫茲力">洛倫茲力</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%A3%81%E7%9F%B3" class="mw-redirect" title="磁石">磁石</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%A3%81%E9%9B%99%E6%A5%B5" title="磁雙極">磁雙極</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%A3%81%E5%8C%96" title="磁化">磁化</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%A3%81%E7%9F%A9" title="磁矩">磁矩</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;padding-left:0em;padding-right:0em;"><div style="padding:0em 0.75em;"><a href="/wiki/%E9%9B%BB%E8%B7%AF" title="電路">電路</a></div></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E9%9B%BB%E6%B5%81" title="電流">電流</a>（<a href="/wiki/%E9%9B%BB%E5%8B%95%E5%8B%A2" title="電動勢">電動勢</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E6%B5%81%E5%AF%86%E5%BA%A6" title="電流密度">電流密度</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E9%98%BB" title="電阻">電阻</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E9%98%BB%E6%8A%97" title="電阻抗">電阻抗</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%AE%B9" title="電容">電容</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E4%B9%BE%E9%9B%BB" title="乾電">乾電</a>同<a href="/wiki/%E6%BF%95%E9%9B%BB" title="濕電">濕電</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E4%B8%B2%E8%81%AF%E5%90%8C%E4%B8%A6%E8%81%AF%E9%9B%BB%E8%B7%AF" title="串聯同並聯電路">串聯同並聯電路</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E6%84%9F" title="電感">電感</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%84%A6%E8%80%B3%E5%8A%A0%E7%86%B1" title="焦耳加熱">焦耳加熱</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E8%A7%A3" title="電解">電解</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%9F%AD%E8%B7%AF" title="短路">短路</a></div></td></tr><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E9%9B%BB%E8%83%BD" title="電能">電能</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%94%BE%E9%9B%BB" title="放電">放電</a>（<a href="/wiki/%E9%9D%9C%E9%9B%BB%E6%94%BE%E9%9B%BB" title="靜電放電">靜電放電</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E7%A3%81%E8%BC%BB%E5%B0%84" title="電磁輻射">電磁輻射</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E7%A3%81%E6%B3%A2" title="電磁波">電磁波</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E7%A3%81%E8%84%88%E8%A1%9D" title="電磁脈衝">電磁脈衝</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%A3%93%E9%9B%BB%E6%95%88%E6%87%89" title="壓電效應">壓電效應</a></div></td></tr></tbody></table><div></div></td><td class="navbox-image" rowspan="5" style="width:1px;padding:0px 0px 0px 2px"><div><span typeof="mw:File"><a href="/wiki/File:Inductor.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Inductor.png/150px-Inductor.png" decoding="async" width="150" height="121" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Inductor.png/225px-Inductor.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/46/Inductor.png/300px-Inductor.png 2x" data-file-width="715" data-file-height="576" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">主要<a href="/wiki/%E7%89%A9%E7%90%86%E5%AE%9A%E5%BE%8B" title="物理定律">定律</a></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E5%BA%AB%E4%BE%96%E5%AE%9A%E5%BE%8B" title="庫侖定律">庫侖定律</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%9F%BA%E7%88%BE%E9%9C%8D%E5%A4%AB%E9%9B%BB%E8%B7%AF%E5%AE%9A%E5%BE%8B" title="基爾霍夫電路定律">基爾霍夫電路定律</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%BF%85%E6%AD%90-%E6%B2%99%E4%BC%90%E5%AE%9A%E5%BE%8B" title="必歐-沙伐定律">必歐-沙伐定律</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%BA%A5%E5%A3%AB%E7%B6%AD%E6%96%B9%E7%A8%8B%E7%B5%84" title="麥士維方程組">麥士維方程組</a>（<a href="/wiki/%E9%AB%98%E6%96%AF%E5%AE%9A%E5%BE%8B" title="高斯定律">高斯定律</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%AB%98%E6%96%AF%E7%A3%81%E5%AE%9A%E5%BE%8B" title="高斯磁定律">高斯磁定律</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%B3%95%E6%8B%89%E7%AC%AC%E9%9B%BB%E7%A3%81%E6%84%9F%E6%87%89%E5%AE%9A%E5%BE%8B" title="法拉第電磁感應定律">法拉第電磁感應定律</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%AE%89%E5%9F%B9%E5%AE%9A%E5%BE%8B" title="安培定律">安培定律</a>）</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">應用</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;padding-left:0em;padding-right:0em;"><div style="padding:0em 0.75em;"><a href="/wiki/%E9%9B%BB%E6%A9%9F" title="電機">電機</a></div></th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E9%9B%BB%E6%91%A9%E6%89%93" title="電摩打">電摩打</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%99%BC%E9%9B%BB%E6%A9%9F" title="發電機">發電機</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E7%B6%B2" title="電網">電網</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%81%AB%E7%89%9B" title="火牛">火牛</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%89%B9%E6%96%AF%E6%8B%89%E7%B7%9A%E5%9C%88" title="特斯拉線圈">特斯拉線圈</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;padding-left:0em;padding-right:0em;"><div style="padding:0em 0.75em;">　領域</div></th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E9%9B%BB%E6%A9%9F%E5%B7%A5%E7%A8%8B" title="電機工程">電機工程</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%8A%9B%E5%B7%A5%E7%A8%8B" title="電力工程">電力工程</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%AD%90%E5%B7%A5%E7%A8%8B" title="電子工程">電子工程</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%A9%9F%E9%9B%BB%E5%B7%A5%E7%A8%8B" class="mw-redirect" title="機電工程">機電工程</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%9B%BB%E5%B7%A5" title="電工">電工</a></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">睇埋</th><td class="navbox-list navbox-even" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E5%8A%9B%E5%AD%B8" title="力學">力學</a>（<a href="/wiki/%E5%8F%A4%E5%85%B8%E5%8A%9B%E5%AD%B8" title="古典力學">古典力學</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%87%8F%E5%AD%90%E5%8A%9B%E5%AD%B8" title="量子力學">量子力學</a>）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%90%91%E9%87%8F%E7%A9%BA%E9%96%93" title="向量空間">向量空間</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%BC%B5%E9%87%8F" title="張量">張量</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%A5%9E%E7%B6%93%E7%B4%B0%E8%83%9E" title="神經細胞">神經細胞</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">理論史</th><td class="navbox-list navbox-odd" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E6%9F%A5%E7%90%86%E6%96%AF%C2%B7%E5%BA%AB%E4%BE%96" title="查理斯·庫侖">查理斯·庫侖</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%AE%89%E5%BE%B7%E7%83%88%E7%91%AA%E9%BA%97%E5%AE%89%E5%9F%B9" title="安德烈瑪麗安培">安德烈瑪麗安培</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%8D%A0%E5%A3%AB%E7%84%A6%E8%80%B3" title="占士焦耳">占士焦耳</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%AB%98%E6%96%AF" class="mw-redirect" title="高斯">高斯</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%B3%95%E6%8B%89%E7%AC%AC" class="mw-redirect" title="法拉第">法拉第</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%89%B9%E6%96%AF%E6%8B%89" class="mw-redirect" title="特斯拉">特斯拉</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%AD%90%E6%8B%94%C2%B7%E6%84%9B%E5%9B%A0%E6%96%AF%E5%9D%A6" title="歐拔·愛因斯坦">歐拔·愛因斯坦</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E9%87%8F%E5%AD%90%E9%9B%BB%E5%8B%95%E5%8A%9B%E5%AD%B8" title="量子電動力學">量子電動力學</a></div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div><a href="/wiki/Category:%E9%9B%BB%E7%A3%81%E5%AD%B8" title="Category:電磁學">電磁學類</a></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">由「<a dir="ltr" href="https://zh-yue.wikipedia.org/w/index.php?title=電&oldid=2149205">https://zh-yue.wikipedia.org/w/index.php?title=電&oldid=2149205</a>」收</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:%E5%88%86%E9%A1%9E" title="Special:分類">屬於1類</a>：<ul><li><a href="/wiki/Category:%E9%9B%BB" title="Category:電">電</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">屬於1隱類：<ul><li><a href="/wiki/Category:%E6%9C%89%E5%8F%83%E8%80%83%E9%8C%AF%E8%AA%A4%E5%98%85%E7%89%88" title="Category:有參考錯誤嘅版">有參考錯誤嘅版</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> 呢版上次改係2024年6月24號 (禮拜一) 21:07 嘅事。</li> <li id="footer-info-copyright">呢度嘅所有文字係根據<a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 牌照 4.0</a>嘅條款發佈；可能會有附加嘅條款。利用呢個網站，你同意<a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use">利用條款</a>同埋<a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">私隱政策</a>。Wikipedia® 係<a rel="nofollow" class="external text" href="https://www.wikimediafoundation.org/">Wikimedia Foundation, Inc.</a> 嘅註冊商標，一個非牟利機構。</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">私隱政策</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:%E9%97%9C%E6%96%BC">關於維基百科</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:%E4%B8%80%E8%88%AC%E5%85%8D%E8%B2%AC%E8%81%B2%E6%98%8E">免責聲明</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">行為準則</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">開發人員</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/zh-yue.wikipedia.org">統計</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie聲明</a></li> <li id="footer-places-mobileview"><a href="//zh-yue.m.wikipedia.org/w/index.php?title=%E9%9B%BB&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">手提版</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-57488d5c7d-rbmpt","wgBackendResponseTime":172,"wgPageParseReport":{"limitreport":{"cputime":"0.174","walltime":"0.342","ppvisitednodes":{"value":1863,"limit":1000000},"postexpandincludesize":{"value":52987,"limit":2097152},"templateargumentsize":{"value":3765,"limit":2097152},"expansiondepth":{"value":9,"limit":100},"expensivefunctioncount":{"value":0,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":12537,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 146.878 1 -total"," 24.56% 36.074 3 Template:Navbox"," 20.57% 30.207 1 Template:Commons"," 19.86% 29.174 1 Template:電磁學"," 18.74% 27.519 2 Template:Jpingauto"," 16.87% 24.775 1 Template:Sister"," 15.07% 22.129 2 Template:Reflist"," 13.31% 19.553 1 Template:Side_box"," 12.69% 18.646 4 Template:Str_find"," 10.71% 15.733 5 Template:Main"]},"scribunto":{"limitreport-timeusage":{"value":"0.028","limit":"10.000"},"limitreport-memusage":{"value":1442997,"limit":52428800}},"cachereport":{"origin":"mw-web.eqiad.main-5695644f9d-sr8wq","timestamp":"20241128043910","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"\u96fb","url":"https:\/\/zh-yue.wikipedia.org\/wiki\/%E9%9B%BB","sameAs":"http:\/\/www.wikidata.org\/entity\/Q12725","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q12725","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2006-07-02T01:18:57Z","dateModified":"2024-06-24T21:07:57Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/7\/7d\/Lightning_NOAA.jpg"}</script> </body> </html>