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-enabled skin-theme-clientpref-day vector-toc-available" lang="is" dir="ltr"> <head> <meta charset="UTF-8"> <title>Rafmótstaða - Wikipedia, frjálsa alfræðiritið</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-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )iswikimwclientpreferences=([^;]+)/);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":[",\t.",".\t,"],"wgDigitTransformTable":["",""], "wgDefaultDateFormat":"dmyt","wgMonthNames":["","janúar","febrúar","mars","apríl","maí","júní","júlí","ágúst","september","október","nóvember","desember"],"wgRequestId":"688155e5-4e8e-4b25-8665-978eb55a2726","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Rafmótstaða","wgTitle":"Rafmótstaða","wgCurRevisionId":1886179,"wgRevisionId":1886179,"wgArticleId":55853,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Rafmagnsfræði"],"wgPageViewLanguage":"is","wgPageContentLanguage":"is","wgPageContentModel":"wikitext","wgRelevantPageName":"Rafmótstaða","wgRelevantArticleId":55853,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":true,"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{ "pageLanguageCode":"is","pageLanguageDir":"ltr","pageVariantFallbacks":"is"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":true,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":1000,"wgRelatedArticlesCompat":[],"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q25358","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.gadget.graabot":"ready","ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.math.styles": "ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["site","mediawiki.page.ready","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.urlShortener.toolbar","ext.centralauth.centralautologin","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=is&modules=ext.math.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.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=is&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=is&modules=ext.gadget.graabot&only=styles&skin=vector-2022"> <link rel="stylesheet" href="/w/load.php?lang=is&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.5"> <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 name="viewport" content="width=1120"> <meta property="og:title" content="Rafmótstaða - Wikipedia, frjálsa alfræðiritið"> <meta property="og:type" content="website"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//is.m.wikipedia.org/wiki/Rafm%C3%B3tsta%C3%B0a"> <link rel="alternate" type="application/x-wiki" title="Breyta" href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&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="Wikipedia (is)"> <link rel="EditURI" type="application/rsd+xml" href="//is.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://is.wikipedia.org/wiki/Rafm%C3%B3tsta%C3%B0a"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.is"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom-streymi" href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:N%C3%BDlegar_breytingar&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-Rafmótstaða rootpage-Rafmótstaða skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Fara í innihald</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="Vefsíða"> <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="Aðalvalmynd" > <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">Aðalvalmynd</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">Aðalvalmynd</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">færa í hliðarstiku</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">fela</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Flakk </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage" class="mw-list-item"><a href="/wiki/Fors%C3%AD%C3%B0a" title="Forsíða Wikipedia [z]" accesskey="z"><span>Forsíða</span></a></li><li id="n-Úrvalsefni" class="mw-list-item"><a href="/wiki/G%C3%A1tt:%C3%9Arvalsefni"><span>Úrvalsefni</span></a></li><li id="n-Efnisyfirlit" class="mw-list-item"><a href="/wiki/Flokkur:Efnisyfirlit"><span>Efnisyfirlit</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Handah%C3%B3fsvalin_s%C3%AD%C3%B0a" title="Handahófsvalin síða [x]" accesskey="x"><span>Handahófsvalin síða</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Hj%C3%A1lp:Efnisyfirlit" title="Efnisyfirlit yfir hjálparsíður."><span>Hjálp</span></a></li> </ul> </div> </div> <div id="p-verkefnið" class="vector-menu mw-portlet mw-portlet-verkefnið" > <div class="vector-menu-heading"> Verkefnið </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:N%C3%BDlegar_breytingar" title="Listi yfir nýlegar breytingar. [r]" accesskey="r"><span>Nýlegar breytingar</span></a></li><li id="n-newpages" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:N%C3%BDjustu_greinar"><span>Nýjustu greinar</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Samf%C3%A9lagsg%C3%A1tt" title="Um verkefnið, hvernig er hægt að hjálpa og hvar á að byrja"><span>Samfélagsgátt</span></a></li><li id="n-Potturinn" class="mw-list-item"><a href="/wiki/Wikipedia:Potturinn"><span>Potturinn</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Fors%C3%AD%C3%B0a" 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="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="Frjálsa alfræðiritið" src="/static/images/mobile/copyright/wikipedia-tagline-is.svg" width="118" height="12" style="width: 7.375em; height: 0.75em;"> </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/Kerfiss%C3%AD%C3%B0a:Leit" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Leit á þessari Wiki [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Leit</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="Leita á Wikipedia" aria-label="Leita á Wikipedia" autocapitalize="sentences" title="Leit á þessari Wiki [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Kerfissíða:Leit"> </div> <button class="cdx-button cdx-search-input__end-button">Leita</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Persónuleg verkfæri"> <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="Útlit"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Breyttu leturstærð, breidd og bakgrunnslit vefsíðunnar" > <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="Útlit" > <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">Útlit</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_is.wikipedia.org&uselang=is" class=""><span>Fjárframlög</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=Kerfiss%C3%AD%C3%B0a:B%C3%BAa_til_a%C3%B0gang&returnto=Rafm%C3%B3tsta%C3%B0a" title="Þú ert hvattur/hvött til að búa til aðgang og skrá þig inn; en það er ekki skylda" class=""><span>Búa til aðgang</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=Kerfiss%C3%AD%C3%B0a:Innskr%C3%A1&returnto=Rafm%C3%B3tsta%C3%B0a" title="Þú ert hvattur/hvött til að innskrá þig, það er hinsvegar ekki skylda. [o]" accesskey="o" class=""><span>Skrá inn</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" title="Frekari valkostir" > <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="Persónuleg verkfæri" > <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">Persónuleg verkfæri</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Notandavalmynd" > <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_is.wikipedia.org&uselang=is"><span>Fjárframlög</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:B%C3%BAa_til_a%C3%B0gang&returnto=Rafm%C3%B3tsta%C3%B0a" title="Þú ert hvattur/hvött til að búa til aðgang og skrá þig inn; en það er ekki skylda"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Búa til aðgang</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:Innskr%C3%A1&returnto=Rafm%C3%B3tsta%C3%B0a" title="Þú ert hvattur/hvött til að innskrá þig, það er hinsvegar ekki skylda. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Skrá inn</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Síður fyrir útskráða notendur <a href="/wiki/Hj%C3%A1lp:Introduction" aria-label="Læra meira um breytingar"><span>Læra meira</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Framl%C3%B6g_m%C3%ADn" title="Listi yfir breytingar frá þessu IP-staðfangi [y]" accesskey="y"><span>Framlög</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Spjallas%C3%AD%C3%B0a_m%C3%ADn" title="Spjall um breytingar frá þessu IP-staðfangi [n]" accesskey="n"><span>Spjall</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="Vefsíða"> <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="Efni" 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">Efni</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">færa í hliðarstiku</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">fela</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">Byrjun</div> </a> </li> <li id="toc-Skilgreining" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Skilgreining"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Skilgreining</span> </div> </a> <ul id="toc-Skilgreining-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="Efni" 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="Sýna/fela efnisyfirlit" > <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">Sýna/fela efnisyfirlit</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">Rafmótstaða</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="Fara á grein á öðru tungumáli. Til staðar á 85 tungumálum" > <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-85" 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">85 tungumál</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%98%E1%8C%A0%E1%8A%90_%E1%8A%A5%E1%8A%95%E1%89%85%E1%8D%8B%E1%89%B5" title="መጠነ እንቅፋት – amharíska" lang="am" hreflang="am" data-title="መጠነ እንቅፋት" data-language-autonym="አማርኛ" data-language-local-name="amharíska" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D9%82%D8%A7%D9%88%D9%85%D8%A9_%D9%83%D9%87%D8%B1%D8%A8%D8%A7%D8%A6%D9%8A%D8%A9" title="مقاومة كهربائية – arabíska" lang="ar" hreflang="ar" data-title="مقاومة كهربائية" data-language-autonym="العربية" data-language-local-name="arabíska" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Elektrik_m%C3%BCqavim%C9%99ti" title="Elektrik müqaviməti – aserska" lang="az" hreflang="az" data-title="Elektrik müqaviməti" data-language-autonym="Azərbaycanca" data-language-local-name="aserska" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Elektrischa_Widastaund" title="Elektrischa Widastaund – Bavarian" lang="bar" hreflang="bar" data-title="Elektrischa Widastaund" data-language-autonym="Boarisch" data-language-local-name="Bavarian" class="interlanguage-link-target"><span>Boarisch</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%D0%B5_%D1%81%D1%83%D0%BF%D1%80%D0%B0%D1%86%D1%96%D1%9E%D0%BB%D0%B5%D0%BD%D0%BD%D0%B5" title="Электрычнае супраціўленне – hvítrússneska" lang="be" hreflang="be" data-title="Электрычнае супраціўленне" data-language-autonym="Беларуская" data-language-local-name="hvítrússneska" 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%A1%D1%83%D0%BF%D0%BE%D1%80" title="Супор – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Супор" 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%D0%BA%D0%BE_%D1%81%D1%8A%D0%BF%D1%80%D0%BE%D1%82%D0%B8%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5" title="Електрическо съпротивление – búlgarska" lang="bg" hreflang="bg" data-title="Електрическо съпротивление" data-language-autonym="Български" data-language-local-name="búlgarska" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn badge-Q70893996 mw-list-item" title=""><a href="https://bn.wikipedia.org/wiki/%E0%A6%B0%E0%A7%8B%E0%A6%A7" title="রোধ – bengalska" lang="bn" hreflang="bn" data-title="রোধ" data-language-autonym="বাংলা" data-language-local-name="bengalska" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Elektri%C4%8Dni_otpor" title="Električni otpor – bosníska" lang="bs" hreflang="bs" data-title="Električni otpor" data-language-autonym="Bosanski" data-language-local-name="bosníska" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Resist%C3%A8ncia_el%C3%A8ctrica_(propietat)" title="Resistència elèctrica (propietat) – katalónska" lang="ca" hreflang="ca" data-title="Resistència elèctrica (propietat)" data-language-autonym="Català" data-language-local-name="katalónska" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%A8%DB%95%D8%B1%DA%AF%D8%B1%DB%8C_%DA%A9%D8%A7%D8%B1%DB%95%D8%A8%D8%A7%DB%8C%DB%8C" title="بەرگری کارەبایی – miðkúrdíska" lang="ckb" hreflang="ckb" data-title="بەرگری کارەبایی" data-language-autonym="کوردی" data-language-local-name="miðkúrdíska" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Elektrick%C3%BD_odpor" title="Elektrický odpor – tékkneska" lang="cs" hreflang="cs" data-title="Elektrický odpor" data-language-autonym="Čeština" data-language-local-name="tékkneska" 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_%D1%85%D0%B8%D1%80%C4%95%C3%A7%D1%82%C4%83%D1%80%D1%83" title="Электро хирĕçтăру – sjúvas" lang="cv" hreflang="cv" data-title="Электро хирĕçтăру" data-language-autonym="Чӑвашла" data-language-local-name="sjúvas" 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/Gwrthiant_trydanol" title="Gwrthiant trydanol – velska" lang="cy" hreflang="cy" data-title="Gwrthiant trydanol" data-language-autonym="Cymraeg" data-language-local-name="velska" 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/Resistans" title="Resistans – danska" lang="da" hreflang="da" data-title="Resistans" data-language-autonym="Dansk" data-language-local-name="danska" 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/Elektrischer_Widerstand" title="Elektrischer Widerstand – þýska" lang="de" hreflang="de" data-title="Elektrischer Widerstand" data-language-autonym="Deutsch" data-language-local-name="þýska" class="interlanguage-link-target"><span>Deutsch</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%CE%BA%CE%AE_%CE%B1%CE%BD%CF%84%CE%AF%CF%83%CF%84%CE%B1%CF%83%CE%B7" title="Ηλεκτρική αντίσταση – gríska" lang="el" hreflang="el" data-title="Ηλεκτρική αντίσταση" data-language-autonym="Ελληνικά" data-language-local-name="gríska" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en badge-Q70893996 mw-list-item" title=""><a href="https://en.wikipedia.org/wiki/Electrical_resistance" title="Electrical resistance – enska" lang="en" hreflang="en" data-title="Electrical resistance" data-language-autonym="English" data-language-local-name="enska" 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/Elektra_rezistanco" title="Elektra rezistanco – esperantó" lang="eo" hreflang="eo" data-title="Elektra rezistanco" data-language-autonym="Esperanto" data-language-local-name="esperantó" 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/Resistencia_el%C3%A9ctrica" title="Resistencia eléctrica – spænska" lang="es" hreflang="es" data-title="Resistencia eléctrica" data-language-autonym="Español" data-language-local-name="spænska" 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/Takistus" title="Takistus – eistneska" lang="et" hreflang="et" data-title="Takistus" data-language-autonym="Eesti" data-language-local-name="eistneska" 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/Erresistentzia_elektriko" title="Erresistentzia elektriko – baskneska" lang="eu" hreflang="eu" data-title="Erresistentzia elektriko" data-language-autonym="Euskara" data-language-local-name="baskneska" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Resistanssi" title="Resistanssi – finnska" lang="fi" hreflang="fi" data-title="Resistanssi" data-language-autonym="Suomi" data-language-local-name="finnska" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Elektrisk_m%C3%B3tst%C3%B8%C3%B0a" title="Elektrisk mótstøða – færeyska" lang="fo" hreflang="fo" data-title="Elektrisk mótstøða" data-language-autonym="Føroyskt" data-language-local-name="færeyska" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/R%C3%A9sistance_(%C3%A9lectricit%C3%A9)" title="Résistance (électricité) – franska" lang="fr" hreflang="fr" data-title="Résistance (électricité)" data-language-autonym="Français" data-language-local-name="franska" 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/Elektrisk_wederstant" title="Elektrisk wederstant – norðurfrísneska" lang="frr" hreflang="frr" data-title="Elektrisk wederstant" data-language-autonym="Nordfriisk" data-language-local-name="norðurfrísneska" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Resistencia_el%C3%A9ctrica" title="Resistencia eléctrica – galisíska" lang="gl" hreflang="gl" data-title="Resistencia eléctrica" data-language-autonym="Galego" data-language-local-name="galisíska" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he badge-Q70894304 mw-list-item" title=""><a href="https://he.wikipedia.org/wiki/%D7%94%D7%AA%D7%A0%D7%92%D7%93%D7%95%D7%AA_%D7%97%D7%A9%D7%9E%D7%9C%D7%99%D7%AA" title="התנגדות חשמלית – hebreska" lang="he" hreflang="he" data-title="התנגדות חשמלית" data-language-autonym="עברית" data-language-local-name="hebreska" 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_%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%A4%E0%A4%BF%E0%A4%B0%E0%A5%8B%E0%A4%A7" title="विद्युत प्रतिरोध – hindí" lang="hi" hreflang="hi" data-title="विद्युत प्रतिरोध" data-language-autonym="हिन्दी" data-language-local-name="hindí" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Elektri%C4%8Dni_otpor" title="Električni otpor – króatíska" lang="hr" hreflang="hr" data-title="Električni otpor" data-language-autonym="Hrvatski" data-language-local-name="króatíska" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Rezistans_(elektrisite)" title="Rezistans (elektrisite) – haítíska" lang="ht" hreflang="ht" data-title="Rezistans (elektrisite)" data-language-autonym="Kreyòl ayisyen" data-language-local-name="haítíska" 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/Elektromos_ellen%C3%A1ll%C3%A1s" title="Elektromos ellenállás – ungverska" lang="hu" hreflang="hu" data-title="Elektromos ellenállás" data-language-autonym="Magyar" data-language-local-name="ungverska" 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%B4%D5%AB%D5%B4%D5%A1%D5%A4%D6%80%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6_(%D5%A7%D5%AC%D5%A5%D5%AF%D5%BF%D6%80%D5%A1%D5%AF%D5%A1%D5%B6)" title="Դիմադրություն (էլեկտրական) – armenska" lang="hy" hreflang="hy" data-title="Դիմադրություն (էլեկտրական)" data-language-autonym="Հայերեն" data-language-local-name="armenska" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Hambatan_listrik" title="Hambatan listrik – indónesíska" lang="id" hreflang="id" data-title="Hambatan listrik" data-language-autonym="Bahasa Indonesia" data-language-local-name="indónesíska" 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/Elektrala_rezistiveso" title="Elektrala rezistiveso – ídó" lang="io" hreflang="io" data-title="Elektrala rezistiveso" data-language-autonym="Ido" data-language-local-name="ídó" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Resistenza_elettrica" title="Resistenza elettrica – ítalska" lang="it" hreflang="it" data-title="Resistenza elettrica" data-language-autonym="Italiano" data-language-local-name="ítalska" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%9B%BB%E6%B0%97%E6%8A%B5%E6%8A%97" title="電気抵抗 – japanska" lang="ja" hreflang="ja" data-title="電気抵抗" data-language-autonym="日本語" data-language-local-name="japanska" class="interlanguage-link-target"><span>日本語</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%A3%E1%83%9A%E1%83%98_%E1%83%AC%E1%83%98%E1%83%9C%E1%83%90%E1%83%A6%E1%83%9D%E1%83%91%E1%83%90" title="ელექტრული წინაღობა – georgíska" lang="ka" hreflang="ka" data-title="ელექტრული წინაღობა" data-language-autonym="ქართული" data-language-local-name="georgíska" class="interlanguage-link-target"><span>ქართული</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%D0%BB%D1%96%D0%BA_%D0%BA%D0%B5%D0%B4%D0%B5%D1%80%D0%B3%D1%96" title="Электрлік кедергі – kasakska" lang="kk" hreflang="kk" data-title="Электрлік кедергі" data-language-autonym="Қазақша" data-language-local-name="kasakska" class="interlanguage-link-target"><span>Қазақша</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%EC%A0%80%ED%95%AD" title="전기저항 – kóreska" lang="ko" hreflang="ko" data-title="전기저항" data-language-autonym="한국어" data-language-local-name="kóreska" class="interlanguage-link-target"><span>한국어</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_%D0%BA%D0%B0%D1%80%D1%88%D1%8B%D0%BB%D1%8B%D0%B3%D1%8B" title="Электр каршылыгы – kirgiska" lang="ky" hreflang="ky" data-title="Электр каршылыгы" data-language-autonym="Кыргызча" data-language-local-name="kirgiska" 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/Resistentia_electrica" title="Resistentia electrica – latína" lang="la" hreflang="la" data-title="Resistentia electrica" data-language-autonym="Latina" data-language-local-name="latína" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Resistenza_eletriga" title="Resistenza eletriga – Lombard" lang="lmo" hreflang="lmo" data-title="Resistenza eletriga" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Elektrin%C4%97_var%C5%BEa" title="Elektrinė varža – litháíska" lang="lt" hreflang="lt" data-title="Elektrinė varža" data-language-autonym="Lietuvių" data-language-local-name="litháíska" 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/Elektrisk%C4%81_pretest%C4%ABba" title="Elektriskā pretestība – lettneska" lang="lv" hreflang="lv" data-title="Elektriskā pretestība" data-language-autonym="Latviešu" data-language-local-name="lettneska" class="interlanguage-link-target"><span>Latviešu</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%87%D0%B5%D0%BD_%D0%BE%D1%82%D0%BF%D0%BE%D1%80" title="Електричен отпор – makedónska" lang="mk" hreflang="mk" data-title="Електричен отпор" data-language-autonym="Македонски" data-language-local-name="makedónska" 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%AA%E0%B5%8D%E0%B4%B0%E0%B4%A4%E0%B4%BF%E0%B4%B0%E0%B5%8B%E0%B4%A7%E0%B4%82" title="വൈദ്യുതപ്രതിരോധം – malajalam" lang="ml" hreflang="ml" data-title="വൈദ്യുതപ്രതിരോധം" data-language-autonym="മലയാളം" data-language-local-name="malajalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A6%D0%B0%D1%85%D0%B8%D0%BB%D0%B3%D0%B0%D0%B0%D0%BD_%D1%8D%D1%81%D1%8D%D1%80%D0%B3%D2%AF%D2%AF%D1%86%D1%8D%D0%BB" title="Цахилгаан эсэргүүцэл – mongólska" lang="mn" hreflang="mn" data-title="Цахилгаан эсэргүүцэл" data-language-autonym="Монгол" data-language-local-name="mongólska" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Rintangan_elektrik" title="Rintangan elektrik – malaíska" lang="ms" hreflang="ms" data-title="Rintangan elektrik" data-language-autonym="Bahasa Melayu" data-language-local-name="malaíska" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Elektrisch_Wedderstand" title="Elektrisch Wedderstand – lágþýska; lágsaxneska" lang="nds" hreflang="nds" data-title="Elektrisch Wedderstand" data-language-autonym="Plattdüütsch" data-language-local-name="lágþýska; lágsaxneska" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Elektrische_weerstand_(eigenschap)" title="Elektrische weerstand (eigenschap) – hollenska" lang="nl" hreflang="nl" data-title="Elektrische weerstand (eigenschap)" data-language-autonym="Nederlands" data-language-local-name="hollenska" 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/Elektrisk_motstand" title="Elektrisk motstand – nýnorska" lang="nn" hreflang="nn" data-title="Elektrisk motstand" data-language-autonym="Norsk nynorsk" data-language-local-name="nýnorska" 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/Elektrisk_resistans" title="Elektrisk resistans – norskt bókmál" lang="nb" hreflang="nb" data-title="Elektrisk resistans" data-language-autonym="Norsk bokmål" data-language-local-name="norskt bókmál" class="interlanguage-link-target"><span>Norsk bokmål</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%A8%88_%E0%A8%85%E0%A8%B5%E0%A8%B0%E0%A9%8B%E0%A8%A7" title="ਬਿਜਲਈ ਅਵਰੋਧ – púnjabí" lang="pa" hreflang="pa" data-title="ਬਿਜਲਈ ਅਵਰੋਧ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="púnjabí" 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/Rezystancja" title="Rezystancja – pólska" lang="pl" hreflang="pl" data-title="Rezystancja" data-language-autonym="Polski" data-language-local-name="pólska" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Resist%C3%AAncia_el%C3%A9trica" title="Resistência elétrica – portúgalska" lang="pt" hreflang="pt" data-title="Resistência elétrica" data-language-autonym="Português" data-language-local-name="portúgalska" 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_hark%27ay" title="Pinchikilla hark'ay – kvesjúa" lang="qu" hreflang="qu" data-title="Pinchikilla hark'ay" data-language-autonym="Runa Simi" data-language-local-name="kvesjúa" 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/Rezisten%C8%9B%C4%83_electric%C4%83" title="Rezistență electrică – rúmenska" lang="ro" hreflang="ro" data-title="Rezistență electrică" data-language-autonym="Română" data-language-local-name="rúmenska" 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%D0%BA%D0%BE%D0%B5_%D1%81%D0%BE%D0%BF%D1%80%D0%BE%D1%82%D0%B8%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5" title="Электрическое сопротивление – rússneska" lang="ru" hreflang="ru" data-title="Электрическое сопротивление" data-language-autonym="Русский" data-language-local-name="rússneska" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-se mw-list-item"><a href="https://se.wikipedia.org/wiki/Elektrala%C5%A1_vuosttaldus" title="Elektralaš vuosttaldus – norðursamíska" lang="se" hreflang="se" data-title="Elektralaš vuosttaldus" data-language-autonym="Davvisámegiella" data-language-local-name="norðursamíska" class="interlanguage-link-target"><span>Davvisámegiella</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Electrical_resistance" title="Electrical resistance – Simple English" lang="en-simple" hreflang="en-simple" data-title="Electrical resistance" 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/Elektrick%C3%BD_odpor" title="Elektrický odpor – slóvakíska" lang="sk" hreflang="sk" data-title="Elektrický odpor" data-language-autonym="Slovenčina" data-language-local-name="slóvakíska" 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/Elektri%C4%8Dni_upor" title="Električni upor – slóvenska" lang="sl" hreflang="sl" data-title="Električni upor" data-language-autonym="Slovenščina" data-language-local-name="slóvenska" 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/Mukweso" title="Mukweso – shona" lang="sn" hreflang="sn" data-title="Mukweso" data-language-autonym="ChiShona" data-language-local-name="shona" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Rezistenca_elektrike" title="Rezistenca elektrike – albanska" lang="sq" hreflang="sq" data-title="Rezistenca elektrike" data-language-autonym="Shqip" data-language-local-name="albanska" 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%87%D0%BD%D0%B8_%D0%BE%D1%82%D0%BF%D0%BE%D1%80" title="Електрични отпор – serbneska" lang="sr" hreflang="sr" data-title="Електрични отпор" data-language-autonym="Српски / srpski" data-language-local-name="serbneska" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Wierstand" title="Wierstand – Saterland Frisian" lang="stq" hreflang="stq" data-title="Wierstand" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Resistans" title="Resistans – sænska" lang="sv" hreflang="sv" data-title="Resistans" data-language-autonym="Svenska" data-language-local-name="sænska" 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/Ukinzani" title="Ukinzani – svahílí" lang="sw" hreflang="sw" data-title="Ukinzani" data-language-autonym="Kiswahili" data-language-local-name="svahílí" 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%A4%E0%AE%9F%E0%AF%88" title="மின்தடை – tamílska" lang="ta" hreflang="ta" data-title="மின்தடை" data-language-autonym="தமிழ்" data-language-local-name="tamílska" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tk mw-list-item"><a href="https://tk.wikipedia.org/wiki/Gar%C5%9Fylyk_(elektrik)" title="Garşylyk (elektrik) – túrkmenska" lang="tk" hreflang="tk" data-title="Garşylyk (elektrik)" data-language-autonym="Türkmençe" data-language-local-name="túrkmenska" class="interlanguage-link-target"><span>Türkmençe</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Resistensiya" title="Resistensiya – tagalog" lang="tl" hreflang="tl" data-title="Resistensiya" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</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_%D0%BA%D0%B0%D1%80%D1%88%D1%8B%D0%BB%D1%8B%D0%B3%D1%8B" title="Электр каршылыгы – tatarska" lang="tt" hreflang="tt" data-title="Электр каршылыгы" data-language-autonym="Татарча / tatarça" data-language-local-name="tatarska" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D9%82%D8%A7%D8%B1%D8%B4%D9%89%D9%84%D9%89%D9%82" title="قارشىلىق – úígúr" lang="ug" hreflang="ug" data-title="قارشىلىق" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="úígúr" 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%D1%87%D0%BD%D0%B8%D0%B9_%D0%BE%D0%BF%D1%96%D1%80" title="Електричний опір – úkraínska" lang="uk" hreflang="uk" data-title="Електричний опір" data-language-autonym="Українська" data-language-local-name="úkraínska" 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%DB%8C_%D9%85%D8%B2%D8%A7%D8%AD%D9%85%D8%AA" title="برقی مزاحمت – úrdú" lang="ur" hreflang="ur" data-title="برقی مزاحمت" data-language-autonym="اردو" data-language-local-name="úrdú" 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_qarshilik" title="Elektr qarshilik – úsbekska" lang="uz" hreflang="uz" data-title="Elektr qarshilik" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="úsbekska" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi badge-Q70893996 mw-list-item" title=""><a href="https://vi.wikipedia.org/wiki/%C4%90i%E1%BB%87n_tr%E1%BB%9F" title="Điện trở – víetnamska" lang="vi" hreflang="vi" data-title="Điện trở" data-language-autonym="Tiếng Việt" data-language-local-name="víetnamska" 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/Elektrikal_nga_pagsukol" title="Elektrikal nga pagsukol – varaí" lang="war" hreflang="war" data-title="Elektrikal nga pagsukol" data-language-autonym="Winaray" data-language-local-name="varaí" 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/Nd%C3%ABg%C3%ABrlu_gu_mb%C3%ABj" title="Ndëgërlu gu mbëj – volof" lang="wo" hreflang="wo" data-title="Ndëgërlu gu mbëj" data-language-autonym="Wolof" data-language-local-name="volof" 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%E9%98%BB" title="电阻 – wu-kínverska" lang="wuu" hreflang="wuu" data-title="电阻" data-language-autonym="吴语" data-language-local-name="wu-kínverska" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E7%94%B5%E9%98%BB" title="电阻 – kínverska" lang="zh" hreflang="zh" data-title="电阻" data-language-autonym="中文" data-language-local-name="kínverska" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E9%9B%BB%E9%98%BB" title="電阻 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="電阻" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target"><span>文言</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-ch%C3%B3%CD%98" title="Tiān-chó͘ – Minnan" lang="nan" hreflang="nan" data-title="Tiān-chó͘" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%9B%BB%E9%98%BB" title="電阻 – kantónska" lang="yue" hreflang="yue" data-title="電阻" data-language-autonym="粵語" data-language-local-name="kantónska" class="interlanguage-link-target"><span>粵語</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/Q25358#sitelinks-wikipedia" title="Breyta tungumálatenglum" class="wbc-editpage">Breyta tenglum</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="Nafnrými"> <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/Rafm%C3%B3tsta%C3%B0a" title="Sýna efnissíðuna [c]" accesskey="c"><span>Síða</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Spjall:Rafm%C3%B3tsta%C3%B0a&action=edit&redlink=1" rel="discussion" class="new" title="Spallsíða þessarar síðu (síða er ekki enn til) [t]" accesskey="t"><span>Spjall</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="Breyta tungumálaafbrigði" > <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">íslenska</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="Sýn"> <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/Rafm%C3%B3tsta%C3%B0a"><span>Lesa</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&veaction=edit" title="Breyta þessari síðu [v]" accesskey="v"><span>Breyta</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&action=edit" title="Breyta frumkóða síðunnar [e]" accesskey="e"><span>Breyta frumkóða</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&action=history" title="Eldri útgáfur af síðunni. [h]" accesskey="h"><span>Breytingaskrá</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Síðuverkfæri"> <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="Verkfæri" > <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">Verkfæri</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">Verkfæri</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">færa í hliðarstiku</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">fela</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Fleiri valkostir" > <div class="vector-menu-heading"> Aðgerðir </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/Rafm%C3%B3tsta%C3%B0a"><span>Lesa</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&veaction=edit" title="Breyta þessari síðu [v]" accesskey="v"><span>Breyta</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&action=edit" title="Breyta frumkóða síðunnar [e]" accesskey="e"><span>Breyta frumkóða</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&action=history"><span>Breytingaskrá</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Almennt </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:S%C3%AD%C3%B0ur_sem_tengjast_hinga%C3%B0/Rafm%C3%B3tsta%C3%B0a" title="Listi yfir síður sem tengjast í þessa [j]" accesskey="j"><span>Hvað tengist hingað</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:N%C3%BDlegar_breytingar_tengdar/Rafm%C3%B3tsta%C3%B0a" rel="nofollow" title="Nýlegar breytingar á ítengdum síðum [k]" accesskey="k"><span>Skyldar breytingar</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:Hlaða_inn_skrá" title="Hlaða inn skrám [u]" accesskey="u"><span>Hlaða inn skrá</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Kerfiss%C3%AD%C3%B0ur" title="Listi yfir kerfissíður [q]" accesskey="q"><span>Kerfissíður</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&oldid=1886179" title="Varanlegur tengill í þessa útgáfu síðunnar"><span>Varanlegur tengill</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&action=info" title="Frekari upplýsingar um þessa síðu"><span>Síðuupplýsingar</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:CiteThisPage&page=Rafm%C3%B3tsta%C3%B0a&id=1886179&wpFormIdentifier=titleform" title="Upplýsingar um hvernig á að vitna í þessa síðu"><span>Vitna í þessa síðu</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:UrlShortener&url=https%3A%2F%2Fis.wikipedia.org%2Fwiki%2FRafm%25C3%25B3tsta%25C3%25B0a"><span>Fá styttan tengil</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:QrCode&url=https%3A%2F%2Fis.wikipedia.org%2Fwiki%2FRafm%25C3%25B3tsta%25C3%25B0a"><span>Niðurhlaða QR-kóða</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Prenta/flytja út </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:Book&bookcmd=book_creator&referer=Rafm%C3%B3tsta%C3%B0a"><span>Búa til bók</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Kerfiss%C3%AD%C3%B0a:DownloadAsPdf&page=Rafm%C3%B3tsta%C3%B0a&action=show-download-screen"><span>Sækja sem PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&printable=yes" title="Prentanleg útgáfa af þessari síðu [p]" accesskey="p"><span>Prentvæn útgáfa</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"> Í öðrum verkefnum </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/Category:Electrical_resistance" hreflang="en"><span>Wikimedia Commons</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/Q25358" title="Tengill á tengdan hlut í gagnagrunni [g]" accesskey="g"><span>Wikidata hlutur</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="Síðuverkfæri"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Útlit"> <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">Útlit</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">færa í hliðarstiku</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">fela</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">Úr Wikipediu, frjálsa alfræðiritinu</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="is" dir="ltr"><p><b>Rafmótstaða</b> (<a href="/wiki/Enska" title="Enska">enska</a>: <i>electrical resistance</i>), oftast kölluð <b>(raf)viðnám</b>, er tregða <a href="/wiki/Raflei%C3%B0ari" title="Rafleiðari">rafleiðara</a> við að flytja <a href="/wiki/Rafstraumur" title="Rafstraumur">rafstraum</a>, mæld í <a href="/wiki/SI_grunneining" title="SI grunneining">SI grunneiningunni</a> <a href="/wiki/Ohm" class="mw-redirect" title="Ohm">ohm</a>. Viðnám veldur <a href="/wiki/Rafspenna" title="Rafspenna">spennufalli</a> í <a href="/wiki/Rafr%C3%A1s" title="Rafrás">rafrás</a> og er yfirleitt <a href="/wiki/Fasti" title="Fasti">fasti</a> í <a href="/wiki/Rafr%C3%A1s" title="Rafrás">rafrásum</a>, en er þó háð <a href="/wiki/Hiti" title="Hiti">hita</a> leiðarans. Orðið <i>viðnám</i> (enska: <i>resistor</i>) er líka notað um <a href="/wiki/Rafeinda%C3%ADhlutur" title="Rafeindaíhlutur">íhluti</a>, sem valda rafmótstöðu í rafrás. </p><p><a href="/wiki/Raflei%C3%B0ni" title="Rafleiðni">Rafleiðni</a> er <a href="/wiki/Umhverfa" title="Umhverfa">umhverfa</a> viðnáms og lýsir eiginleika hlutar við að flytja rafstraum. </p> <div class="mw-heading mw-heading2"><h2 id="Skilgreining">Skilgreining</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&veaction=edit&section=1" title="Breyti hluta: Skilgreining" class="mw-editsection-visualeditor"><span>breyta</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&action=edit&section=1" title="Edit section's source code: Skilgreining"><span>breyta frumkóða</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Ef <a href="/wiki/Raflei%C3%B0ari" title="Rafleiðari">rafleiðari</a> ber einsleitan <a href="/wiki/Jafnstraumur" title="Jafnstraumur">jafnstraum</a> má reikna rafmótstöðu með eftirfarandi <a href="/wiki/Jafna" title="Jafna">jöfnu</a>: </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={l\cdot \rho \over A}\,}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>R</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi>l</mi> <mo>⋅</mo> <mi>ρ</mi> </mrow> <mi>A</mi> </mfrac> </mrow> <mspace width="thinmathspace" /> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle R={l\cdot \rho \over A}\,}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/70c5f69d81f3bfa8381f978ce30dd3923749a2a7" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:9.66ex; height:5.509ex;" alt="{\displaystyle R={l\cdot \rho \over A}\,}"></span></dd></dl> <p>þar sem </p> <dl><dd><i>l</i> er <a href="/wiki/Lengd" title="Lengd">lengd</a> leiðara,</dd> <dd><i>A</i> er <a href="/wiki/Flatarm%C3%A1l" title="Flatarmál">þverskurðarflatarmál</a> hans og</dd> <dd><i>ρ</i> <a href="/w/index.php?title=E%C3%B0lisvi%C3%B0n%C3%A1m&action=edit&redlink=1" class="new" title="Eðlisviðnám (síða er ekki enn til)">eðlisviðnám</a>.</dd></dl> <p>Rafmótstaða í <a href="/wiki/Ri%C3%B0straumur" title="Riðstraumur">riðstraumsrás</a> kallast <a href="/wiki/Samvi%C3%B0n%C3%A1m" title="Samviðnám">samviðnám</a> og er <a href="/wiki/Summa" class="mw-disambig" title="Summa">summa</a> <a href="/wiki/Raunvi%C3%B0n%C3%A1m" title="Raunviðnám">raun-</a> og <a href="/wiki/Launvi%C3%B0n%C3%A1m" title="Launviðnám">launviðnáms</a> rásarinnar. Í jafnstraumsrás er launviðnám <a href="/wiki/N%C3%BAll" title="Núll">núll</a>, þ.a. rafviðnám er eingöngu raunviðnám. </p><p><a href="/wiki/Ohmsl%C3%B6gm%C3%A1l" title="Ohmslögmál">Ohmslögmál</a> gefur samband <a href="/wiki/Rafspenna" title="Rafspenna">rafspennu</a>, <i>V</i>, rafstraums <i>I</i> og rafmótstöðu <i>R</i> í <a href="/wiki/Rafr%C3%A1s" title="Rafrás">rafrás</a> með jöfnunni <i>V</i> = <i>IR</i>. <a href="/w/index.php?title=Ofurlei%C3%B0ari&action=edit&redlink=1" class="new" title="Ofurleiðari (síða er ekki enn til)">Ofurleiðari</a> hefur enga rafmótstöðu. </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Sótt frá „<a dir="ltr" href="https://is.wikipedia.org/w/index.php?title=Rafmótstaða&oldid=1886179">https://is.wikipedia.org/w/index.php?title=Rafmótstaða&oldid=1886179</a>“</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Kerfiss%C3%AD%C3%B0a:Flokkar" title="Kerfissíða:Flokkar">Flokkur</a>: <ul><li><a href="/wiki/Flokkur:Rafmagnsfr%C3%A6%C3%B0i" title="Flokkur:Rafmagnsfræði">Rafmagnsfræði</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"> Þessari síðu var síðast breytt 4. nóvember 2024, klukkan 09:06.</li> <li id="footer-info-copyright">Textinn er gefinn út samkvæmt <a href="/wiki/Wikipedia:H%C3%B6fundar%C3%A9ttur" title="Wikipedia:Höfundaréttur">Creative Commons Tilvísun-DeilaEins leyfi</a>. Sjá nánar í <a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use">notkunarskilmálum</a>.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Meðferð persónuupplýsinga</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:Um_verkefni%C3%B0">Um Wikipediu</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:Almennur_fyrirvari">Fyrirvarar</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Siðareglur</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Forritarar</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/is.wikipedia.org">Tölfræði</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Yfirlýsing vegna vefkakna</a></li> <li id="footer-places-mobileview"><a href="//is.m.wikipedia.org/w/index.php?title=Rafm%C3%B3tsta%C3%B0a&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Farsímaútgáfa</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-5c59558b9d-b8dr4","wgBackendResponseTime":147,"wgPageParseReport":{"limitreport":{"cputime":"0.011","walltime":"0.054","ppvisitednodes":{"value":19,"limit":1000000},"postexpandincludesize":{"value":0,"limit":2097152},"templateargumentsize":{"value":0,"limit":2097152},"expansiondepth":{"value":2,"limit":100},"expensivefunctioncount":{"value":0,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":36,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 0.000 1 -total"]},"cachereport":{"origin":"mw-web.codfw.main-7d9797f5d-tpgxj","timestamp":"20241120020119","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Rafm\u00f3tsta\u00f0a","url":"https:\/\/is.wikipedia.org\/wiki\/Rafm%C3%B3tsta%C3%B0a","sameAs":"http:\/\/www.wikidata.org\/entity\/Q25358","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q25358","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":"2007-10-26T14:22:56Z","dateModified":"2024-11-04T09:06:20Z"}</script> </body> </html>