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</div> </div> </div> </nav> <a href="/wiki/Portada" 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="Viquipèdia" src="/static/images/mobile/copyright/wikipedia-wordmark-ca.svg" style="width: 7.5em; height: 1.4375em;"> <img class="mw-logo-tagline" alt="l'Enciclopèdia Lliure" src="/static/images/mobile/copyright/wikipedia-tagline-ca.svg" width="120" height="14" style="width: 7.5em; height: 0.875em;"> </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/Especial:Cerca" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Cerca a la Viquipèdia [f]" 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</div> <nav class="vector-user-links vector-user-links-wide" aria-label="Eines personals"> <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="Aparença"> <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="Aparença" > <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">Aparença</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_ca.wikipedia.org&uselang=ca" class=""><span>Donatius</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=Especial:Crea_compte&returnto=Volt" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori" class=""><span>Crea un compte</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=Especial:Registre_i_entrada&returnto=Volt" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o" class=""><span>Inicia la sessió</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="Més opcions" > <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="Eines personals" > <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">Eines personals</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menú d'usuari" > <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_ca.wikipedia.org&uselang=ca"><span>Donatius</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Crea_compte&returnto=Volt" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Crea un compte</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Registre_i_entrada&returnto=Volt" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Inicia la sessió</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"> Pàgines per a editors no registrats <a href="/wiki/Ajuda:Introducci%C3%B3" aria-label="Vegeu més informació sobre l'edició"><span>més informació</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/Especial:Contribucions_pr%C3%B2pies" title="Una llista de les modificacions fetes des d'aquesta adreça IP [y]" accesskey="y"><span>Contribucions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Discussi%C3%B3_personal" title="Discussió sobre les edicions per aquesta adreça ip. [n]" accesskey="n"><span>Discussió per aquest IP</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="Lloc"> <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="Contingut" 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">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</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">Inici</div> </a> </li> <li id="toc-Definició" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Definició"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Definició</span> </div> </a> <button aria-controls="toc-Definició-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>Commuta la subsecció Definició</span> </button> <ul id="toc-Definició-sublist" class="vector-toc-list"> <li id="toc-Mesura_en_funció_de_l'efecte_Josephson" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Mesura_en_funció_de_l'efecte_Josephson"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Mesura en funció de l'efecte Josephson</span> </div> </a> <ul id="toc-Mesura_en_funció_de_l'efecte_Josephson-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Descripció" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Descripció"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Descripció</span> </div> </a> <button aria-controls="toc-Descripció-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>Commuta la subsecció Descripció</span> </button> <ul id="toc-Descripció-sublist" class="vector-toc-list"> <li id="toc-Diferència_de_potencial_elèctric" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Diferència_de_potencial_elèctric"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Diferència de potencial elèctric</span> </div> </a> <ul id="toc-Diferència_de_potencial_elèctric-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Analogia_hidràulica" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Analogia_hidràulica"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Analogia hidràulica</span> </div> </a> <ul id="toc-Analogia_hidràulica-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Definició_tècnica" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Definició_tècnica"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Definició tècnica</span> </div> </a> <ul id="toc-Definició_tècnica-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Múltiples_i_submultiples" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Múltiples_i_submultiples"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Múltiples i submultiples</span> </div> </a> <ul id="toc-Múltiples_i_submultiples-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voltatges_comuns" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voltatges_comuns"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Voltatges comuns</span> </div> </a> <ul id="toc-Voltatges_comuns-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Història" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Història"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Història</span> </div> </a> <ul id="toc-Història-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Fórmules_útils" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Fórmules_útils"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Fórmules útils</span> </div> </a> <button aria-controls="toc-Fórmules_útils-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>Commuta la subsecció Fórmules útils</span> </button> <ul id="toc-Fórmules_útils-sublist" class="vector-toc-list"> <li id="toc-Circuits_de_corrent_continu" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Circuits_de_corrent_continu"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.1</span> <span>Circuits de corrent continu</span> </div> </a> <ul id="toc-Circuits_de_corrent_continu-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Circuits_de_corrent_altern" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Circuits_de_corrent_altern"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.2</span> <span>Circuits de corrent altern</span> </div> </a> <ul id="toc-Circuits_de_corrent_altern-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Conversions_en_corrent_altern" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_en_corrent_altern"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.3</span> <span>Conversions en corrent altern</span> </div> </a> <ul id="toc-Conversions_en_corrent_altern-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voltatge_total" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Voltatge_total"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.4</span> <span>Voltatge total</span> </div> </a> <ul id="toc-Voltatge_total-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Caiguda_de_tensió" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Caiguda_de_tensió"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.5</span> <span>Caiguda de tensió</span> </div> </a> <ul id="toc-Caiguda_de_tensió-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Vegeu_també" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vegeu_també"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Vegeu també</span> </div> </a> <ul id="toc-Vegeu_també-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes_i_referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes_i_referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Notes i referències</span> </div> </a> <ul id="toc-Notes_i_referències-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Enllaços_externs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Enllaços_externs"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Enllaços externs</span> </div> </a> <ul id="toc-Enllaços_externs-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="Contingut" 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="Commuta la taula de continguts." > <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">Commuta la taula de continguts.</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">Volt</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="Vés a un article en una altra llengua. Disponible en 111 llengües" > <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-111" 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">111 llengües</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/Volt" title="Volt - afrikaans" lang="af" hreflang="af" data-title="Volt" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" 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/Volt" title="Volt - alemany suís" lang="gsw" hreflang="gsw" data-title="Volt" data-language-autonym="Alemannisch" data-language-local-name="alemany suís" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Volt" title="Volt - aragonès" lang="an" hreflang="an" data-title="Volt" data-language-autonym="Aragonés" data-language-local-name="aragonès" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%81%D9%88%D9%84%D8%AA" title="فولت - àrab" lang="ar" hreflang="ar" data-title="فولت" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%81%D9%88%D9%84%D8%AA" title="فولت - àrab egipci" lang="arz" hreflang="arz" data-title="فولت" data-language-autonym="مصرى" data-language-local-name="àrab egipci" 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%AD%E0%A6%B2%E0%A7%8D%E0%A6%9F" title="ভল্ট - assamès" lang="as" hreflang="as" data-title="ভল্ট" data-language-autonym="অসমীয়া" data-language-local-name="assamès" 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/Voltiu" title="Voltiu - asturià" lang="ast" hreflang="ast" data-title="Voltiu" data-language-autonym="Asturianu" data-language-local-name="asturià" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Volt" title="Volt - azerbaidjanès" lang="az" hreflang="az" data-title="Volt" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaidjanès" 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/%D9%88%D9%88%D9%84%D8%AA" title="وولت - South Azerbaijani" lang="azb" hreflang="azb" data-title="وولت" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Vuolts" title="Vuolts - Samogitian" lang="sgs" hreflang="sgs" data-title="Vuolts" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - belarús" lang="be" hreflang="be" data-title="Вольт" data-language-autonym="Беларуская" data-language-local-name="belarús" 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%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Вольт" 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%92%D0%BE%D0%BB%D1%82" title="Волт - búlgar" lang="bg" hreflang="bg" data-title="Волт" data-language-autonym="Български" data-language-local-name="búlgar" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AD%E0%A7%8B%E0%A6%B2%E0%A7%8D%E0%A6%9F" title="ভোল্ট - bengalí" lang="bn" hreflang="bn" data-title="ভোল্ট" data-language-autonym="বাংলা" data-language-local-name="bengalí" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%9D%E0%BD%BC%E0%BD%A3%E0%BC%8D" title="ཝོལ། - tibetà" lang="bo" hreflang="bo" data-title="ཝོལ།" data-language-autonym="བོད་ཡིག" data-language-local-name="tibetà" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Volt" title="Volt - bretó" lang="br" hreflang="br" data-title="Volt" data-language-autonym="Brezhoneg" data-language-local-name="bretó" 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/Volt" title="Volt - bosnià" lang="bs" hreflang="bs" data-title="Volt" data-language-autonym="Bosanski" data-language-local-name="bosnià" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%A4%DB%86%DA%B5%D8%AA" title="ڤۆڵت - kurd central" lang="ckb" hreflang="ckb" data-title="ڤۆڵت" data-language-autonym="کوردی" data-language-local-name="kurd central" 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/Volt" title="Volt - txec" lang="cs" hreflang="cs" data-title="Volt" data-language-autonym="Čeština" data-language-local-name="txec" 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%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - txuvaix" lang="cv" hreflang="cv" data-title="Вольт" data-language-autonym="Чӑвашла" data-language-local-name="txuvaix" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Volt" title="Volt - danès" lang="da" hreflang="da" data-title="Volt" data-language-autonym="Dansk" data-language-local-name="danès" 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/Volt" title="Volt - alemany" lang="de" hreflang="de" data-title="Volt" data-language-autonym="Deutsch" data-language-local-name="alemany" 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%92%CE%BF%CE%BB%CF%84" title="Βολτ - grec" lang="el" hreflang="el" data-title="Βολτ" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Volt" title="Volt - anglès" lang="en" hreflang="en" data-title="Volt" data-language-autonym="English" data-language-local-name="anglès" 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/Volto" title="Volto - esperanto" lang="eo" hreflang="eo" data-title="Volto" data-language-autonym="Esperanto" data-language-local-name="esperanto" 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/Voltio" title="Voltio - espanyol" lang="es" hreflang="es" data-title="Voltio" data-language-autonym="Español" data-language-local-name="espanyol" 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/Volt" title="Volt - estonià" lang="et" hreflang="et" data-title="Volt" data-language-autonym="Eesti" data-language-local-name="estonià" 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/Volt" title="Volt - basc" lang="eu" hreflang="eu" data-title="Volt" data-language-autonym="Euskara" data-language-local-name="basc" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%88%D9%84%D8%AA" title="ولت - persa" lang="fa" hreflang="fa" data-title="ولت" data-language-autonym="فارسی" data-language-local-name="persa" 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/Voltti" title="Voltti - finès" lang="fi" hreflang="fi" data-title="Voltti" data-language-autonym="Suomi" data-language-local-name="finès" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Volt" title="Volt - francès" lang="fr" hreflang="fr" data-title="Volt" data-language-autonym="Français" data-language-local-name="francès" 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/Volt" title="Volt - frisó septentrional" lang="frr" hreflang="frr" data-title="Volt" data-language-autonym="Nordfriisk" data-language-local-name="frisó septentrional" 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/Volt" title="Volt - friülà" lang="fur" hreflang="fur" data-title="Volt" data-language-autonym="Furlan" data-language-local-name="friülà" 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/Volt_(ienheid)" title="Volt (ienheid) - frisó occidental" lang="fy" hreflang="fy" data-title="Volt (ienheid)" data-language-autonym="Frysk" data-language-local-name="frisó occidental" 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/Volta" title="Volta - irlandès" lang="ga" hreflang="ga" data-title="Volta" data-language-autonym="Gaeilge" data-language-local-name="irlandès" 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/%E4%BC%8F" title="伏 - xinès gan" lang="gan" hreflang="gan" data-title="伏" data-language-autonym="贛語" data-language-local-name="xinès gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Volt" title="Volt - gallec" lang="gl" hreflang="gl" data-title="Volt" data-language-autonym="Galego" data-language-local-name="gallec" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%95%D7%95%D7%9C%D7%98" title="וולט - hebreu" lang="he" hreflang="he" data-title="וולט" data-language-autonym="עברית" data-language-local-name="hebreu" 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%A5%8B%E0%A4%B2%E0%A5%8D%E0%A4%9F" title="वोल्ट - hindi" lang="hi" hreflang="hi" data-title="वोल्ट" data-language-autonym="हिन्दी" data-language-local-name="hindi" 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/Volt" title="Volt - hindi de Fiji" lang="hif" hreflang="hif" data-title="Volt" data-language-autonym="Fiji Hindi" data-language-local-name="hindi de Fiji" 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/Volt" title="Volt - croat" lang="hr" hreflang="hr" data-title="Volt" data-language-autonym="Hrvatski" data-language-local-name="croat" 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/V%C3%B2lt" title="Vòlt - crioll d’Haití" lang="ht" hreflang="ht" data-title="Vòlt" data-language-autonym="Kreyòl ayisyen" data-language-local-name="crioll d’Haití" 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/Volt" title="Volt - hongarès" lang="hu" hreflang="hu" data-title="Volt" data-language-autonym="Magyar" data-language-local-name="hongarès" 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/%D5%8E%D5%B8%D5%AC%D5%BF_(%D5%B9%D5%A1%D6%83%D5%B4%D5%A1%D5%B6_%D5%B4%D5%AB%D5%A1%D5%BE%D5%B8%D6%80)" title="Վոլտ (չափման միավոր) - armeni" lang="hy" hreflang="hy" data-title="Վոլտ (չափման միավոր)" data-language-autonym="Հայերեն" data-language-local-name="armeni" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Volt" title="Volt - interlingua" lang="ia" hreflang="ia" data-title="Volt" data-language-autonym="Interlingua" data-language-local-name="interlingua" 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/Volt" title="Volt - indonesi" lang="id" hreflang="id" data-title="Volt" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesi" 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/Volt" title="Volt - ido" lang="io" hreflang="io" data-title="Volt" data-language-autonym="Ido" data-language-local-name="ido" 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/Volt" title="Volt - islandès" lang="is" hreflang="is" data-title="Volt" data-language-autonym="Íslenska" data-language-local-name="islandès" 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/Volt" title="Volt - italià" lang="it" hreflang="it" data-title="Volt" data-language-autonym="Italiano" data-language-local-name="italià" 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/%E3%83%9C%E3%83%AB%E3%83%88_(%E5%8D%98%E4%BD%8D)" title="ボルト (単位) - japonès" lang="ja" hreflang="ja" data-title="ボルト (単位)" data-language-autonym="日本語" data-language-local-name="japonès" 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/Vuolt" title="Vuolt - crioll anglès de Jamaica" lang="jam" hreflang="jam" data-title="Vuolt" data-language-autonym="Patois" data-language-local-name="crioll anglès de Jamaica" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%95%E1%83%9D%E1%83%9A%E1%83%A2%E1%83%98" title="ვოლტი - georgià" lang="ka" hreflang="ka" data-title="ვოლტი" data-language-autonym="ქართული" data-language-local-name="georgià" 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%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - kazakh" lang="kk" hreflang="kk" data-title="Вольт" data-language-autonym="Қазақша" data-language-local-name="kazakh" 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/%EB%B3%BC%ED%8A%B8_(%EB%8B%A8%EC%9C%84)" title="볼트 (단위) - coreà" lang="ko" hreflang="ko" data-title="볼트 (단위)" data-language-autonym="한국어" data-language-local-name="coreà" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-krc mw-list-item"><a href="https://krc.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - karatxai-balkar" lang="krc" hreflang="krc" data-title="Вольт" data-language-autonym="Къарачай-малкъар" data-language-local-name="karatxai-balkar" class="interlanguage-link-target"><span>Къарачай-малкъар</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Volt" title="Volt - kurd" lang="ku" hreflang="ku" data-title="Volt" data-language-autonym="Kurdî" data-language-local-name="kurd" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - kirguís" lang="ky" hreflang="ky" data-title="Вольт" data-language-autonym="Кыргызча" data-language-local-name="kirguís" 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/Volta_(unitas)" title="Volta (unitas) - llatí" lang="la" hreflang="la" data-title="Volta (unitas)" data-language-autonym="Latina" data-language-local-name="llatí" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Volt_(einheid)" title="Volt (einheid) - limburguès" lang="li" hreflang="li" data-title="Volt (einheid)" data-language-autonym="Limburgs" data-language-local-name="limburguès" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Volt" title="Volt - llombard" lang="lmo" hreflang="lmo" data-title="Volt" data-language-autonym="Lombard" data-language-local-name="llombard" 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/Voltas" title="Voltas - lituà" lang="lt" hreflang="lt" data-title="Voltas" data-language-autonym="Lietuvių" data-language-local-name="lituà" 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/Volts" title="Volts - letó" lang="lv" hreflang="lv" data-title="Volts" data-language-autonym="Latviešu" data-language-local-name="letó" 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%92%D0%BE%D0%BB%D1%82" title="Волт - macedoni" lang="mk" hreflang="mk" data-title="Волт" data-language-autonym="Македонски" data-language-local-name="macedoni" 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%8B%E0%B5%BE%E0%B4%9F%E0%B5%8D%E0%B4%9F%E0%B5%8D" title="വോൾട്ട് - malaiàlam" lang="ml" hreflang="ml" data-title="വോൾട്ട്" data-language-autonym="മലയാളം" data-language-local-name="malaiàlam" 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%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - mongol" lang="mn" hreflang="mn" data-title="Вольт" data-language-autonym="Монгол" data-language-local-name="mongol" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B5%E0%A5%8D%E0%A4%B9%E0%A5%8B%E0%A4%B2%E0%A5%8D%E0%A4%9F" title="व्होल्ट - marathi" lang="mr" hreflang="mr" data-title="व्होल्ट" data-language-autonym="मराठी" data-language-local-name="marathi" 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/Volt" title="Volt - malai" lang="ms" hreflang="ms" data-title="Volt" data-language-autonym="Bahasa Melayu" data-language-local-name="malai" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%97%E1%80%AD%E1%80%AF%E1%80%B7" title="ဗို့ - birmà" lang="my" hreflang="my" data-title="ဗို့" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmà" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%AD%E0%A5%8B%E0%A4%B2%E0%A5%8D%E0%A4%A4" title="भोल्त - newari" lang="new" hreflang="new" data-title="भोल्त" data-language-autonym="नेपाल भाषा" data-language-local-name="newari" 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/Volt_(eenheid)" title="Volt (eenheid) - neerlandès" lang="nl" hreflang="nl" data-title="Volt (eenheid)" data-language-autonym="Nederlands" data-language-local-name="neerlandès" 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/Volt" title="Volt - noruec nynorsk" lang="nn" hreflang="nn" data-title="Volt" data-language-autonym="Norsk nynorsk" data-language-local-name="noruec nynorsk" 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/Volt" title="Volt - noruec bokmål" lang="nb" hreflang="nb" data-title="Volt" data-language-autonym="Norsk bokmål" data-language-local-name="noruec bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/V%C3%B2lt" title="Vòlt - occità" lang="oc" hreflang="oc" data-title="Vòlt" data-language-autonym="Occitan" data-language-local-name="occità" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Wolt" title="Wolt - polonès" lang="pl" hreflang="pl" data-title="Wolt" data-language-autonym="Polski" data-language-local-name="polonès" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/V%C3%B2lt" title="Vòlt - piemontès" lang="pms" hreflang="pms" data-title="Vòlt" data-language-autonym="Piemontèis" data-language-local-name="piemontès" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D9%88%D9%88%D9%84%D9%B9" title="وولٹ - Western Punjabi" lang="pnb" hreflang="pnb" data-title="وولٹ" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Volt" title="Volt - portuguès" lang="pt" hreflang="pt" data-title="Volt" data-language-autonym="Português" data-language-local-name="portuguès" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Volt" title="Volt - romanès" lang="ro" hreflang="ro" data-title="Volt" data-language-autonym="Română" data-language-local-name="romanès" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-tara mw-list-item"><a href="https://roa-tara.wikipedia.org/wiki/Volt" title="Volt - Tarantino" lang="nap-x-tara" hreflang="nap-x-tara" data-title="Volt" data-language-autonym="Tarandíne" data-language-local-name="Tarantino" class="interlanguage-link-target"><span>Tarandíne</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - rus" lang="ru" hreflang="ru" data-title="Вольт" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Volt" title="Volt - sard" lang="sc" hreflang="sc" data-title="Volt" data-language-autonym="Sardu" data-language-local-name="sard" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Volt" title="Volt - sicilià" lang="scn" hreflang="scn" data-title="Volt" data-language-autonym="Sicilianu" data-language-local-name="sicilià" 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/Volt" title="Volt - escocès" lang="sco" hreflang="sco" data-title="Volt" data-language-autonym="Scots" data-language-local-name="escocès" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Volt" title="Volt - serbocroat" lang="sh" hreflang="sh" data-title="Volt" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbocroat" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Volt" title="Volt - Simple English" lang="en-simple" hreflang="en-simple" data-title="Volt" 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/Volt" title="Volt - eslovac" lang="sk" hreflang="sk" data-title="Volt" data-language-autonym="Slovenčina" data-language-local-name="eslovac" 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/Volt" title="Volt - eslovè" lang="sl" hreflang="sl" data-title="Volt" data-language-autonym="Slovenščina" data-language-local-name="eslovè" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Volti" title="Volti - albanès" lang="sq" hreflang="sq" data-title="Volti" data-language-autonym="Shqip" data-language-local-name="albanès" 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%92%D0%BE%D0%BB%D1%82" title="Волт - serbi" lang="sr" hreflang="sr" data-title="Волт" data-language-autonym="Српски / srpski" data-language-local-name="serbi" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Volt" title="Volt - suec" lang="sv" hreflang="sv" data-title="Volt" data-language-autonym="Svenska" data-language-local-name="suec" 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/Volti" title="Volti - suahili" lang="sw" hreflang="sw" data-title="Volti" data-language-autonym="Kiswahili" data-language-local-name="suahili" 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%B5%E0%AF%8B%E0%AE%B2%E0%AF%8D%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AF%81" title="வோல்ட்டு - tàmil" lang="ta" hreflang="ta" data-title="வோல்ட்டு" data-language-autonym="தமிழ்" data-language-local-name="tàmil" 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%B1%8B%E0%B0%B2%E0%B1%8D%E0%B0%9F%E0%B1%8D" title="వోల్ట్ - telugu" lang="te" hreflang="te" data-title="వోల్ట్" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%82" title="Волт - tadjik" lang="tg" hreflang="tg" data-title="Волт" data-language-autonym="Тоҷикӣ" data-language-local-name="tadjik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%A7%E0%B8%A5%E0%B8%95%E0%B9%8C" title="โวลต์ - tai" lang="th" hreflang="th" data-title="โวลต์" data-language-autonym="ไทย" data-language-local-name="tai" 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/Bolt" title="Bolt - tagal" lang="tl" hreflang="tl" data-title="Bolt" data-language-autonym="Tagalog" data-language-local-name="tagal" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Volt" title="Volt - turc" lang="tr" hreflang="tr" data-title="Volt" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - tàtar" lang="tt" hreflang="tt" data-title="Вольт" data-language-autonym="Татарча / tatarça" data-language-local-name="tàtar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tyv mw-list-item"><a href="https://tyv.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - tuvinià" lang="tyv" hreflang="tyv" data-title="Вольт" data-language-autonym="Тыва дыл" data-language-local-name="tuvinià" class="interlanguage-link-target"><span>Тыва дыл</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D0%BE%D0%BB%D1%8C%D1%82" title="Вольт - ucraïnès" lang="uk" hreflang="uk" data-title="Вольт" data-language-autonym="Українська" data-language-local-name="ucraïnès" 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/%D9%88%D9%88%D9%84%D9%B9" title="وولٹ - urdú" lang="ur" hreflang="ur" data-title="وولٹ" data-language-autonym="اردو" data-language-local-name="urdú" 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/Volt" title="Volt - uzbek" lang="uz" hreflang="uz" data-title="Volt" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Volt" title="Volt - vènet" lang="vec" hreflang="vec" data-title="Volt" data-language-autonym="Vèneto" data-language-local-name="vènet" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/V%C3%B4n" title="Vôn - vietnamita" lang="vi" hreflang="vi" data-title="Vôn" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" 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/Boltahe" title="Boltahe - waray" lang="war" hreflang="war" data-title="Boltahe" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E4%BC%8F%E7%89%B9" title="伏特 - xinès wu" lang="wuu" hreflang="wuu" data-title="伏特" data-language-autonym="吴语" data-language-local-name="xinès wu" 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/%E4%BC%8F%E7%89%B9" title="伏特 - xinès" lang="zh" hreflang="zh" data-title="伏特" data-language-autonym="中文" data-language-local-name="xinès" 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/%E4%BC%8F%E7%89%B9" title="伏特 - xinès clàssic" lang="lzh" hreflang="lzh" data-title="伏特" data-language-autonym="文言" data-language-local-name="xinès clàssic" 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/B%C3%B3%CD%98-l%C3%BA-to%CD%98h" title="Bó͘-lú-to͘h - xinès min del sud" lang="nan" hreflang="nan" data-title="Bó͘-lú-to͘h" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="xinès min del sud" 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/%E4%BC%8F_(%E5%96%AE%E4%BD%8D)" title="伏 (單位) - cantonès" lang="yue" hreflang="yue" data-title="伏 (單位)" data-language-autonym="粵語" data-language-local-name="cantonès" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/IsiVuve" title="IsiVuve - zulu" lang="zu" hreflang="zu" data-title="IsiVuve" data-language-autonym="IsiZulu" data-language-local-name="zulu" 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/Q25250#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</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="Espais de noms"> <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/Volt" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussi%C3%B3:Volt&action=edit&redlink=1" rel="discussion" class="new" title="Discussió sobre el contingut d'aquesta pàgina (encara no existeix) [t]" accesskey="t"><span>Discussió</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="Canvia la variant de llengua" > <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">català</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="Vistes"> <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/Volt"><span>Mostra</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Volt&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Volt&action=history" title="Versions antigues d'aquesta pàgina [h]" accesskey="h"><span>Mostra l'historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <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="Eines" > <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">Eines</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">Eines</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">amaga</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Més opcions" > <div class="vector-menu-heading"> Accions </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/Volt"><span>Mostra</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Volt&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Volt&action=history"><span>Mostra l'historial</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:Enlla%C3%A7os/Volt" title="Una llista de totes les pàgines wiki que enllacen amb aquesta [j]" accesskey="j"><span>Què hi enllaça</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Seguiment/Volt" rel="nofollow" title="Canvis recents a pàgines enllaçades des d'aquesta pàgina [k]" accesskey="k"><span>Canvis relacionats</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Especial:P%C3%A0gines_especials" title="Llista totes les pàgines especials [q]" accesskey="q"><span>Pàgines especials</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Volt&oldid=34078289" title="Enllaç permanent a aquesta revisió de la pàgina"><span>Enllaç permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Volt&action=info" title="Més informació sobre aquesta pàgina"><span>Informació de la pàgina</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citau&page=Volt&id=34078289&wpFormIdentifier=titleform" title="Informació sobre com citar aquesta pàgina"><span>Citau aquest article</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FVolt"><span>Obtén una URL abreujada</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FVolt"><span>Descarrega el codi QR</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"> Imprimeix/exporta </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=Especial:Llibre&bookcmd=book_creator&referer=Volt"><span>Crea un llibre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Volt&action=show-download-screen"><span>Baixa com a PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Volt&printable=yes" title="Versió per a impressió d'aquesta pàgina [p]" accesskey="p"><span>Versió per a impressora</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"> En altres projectes </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:Volt" hreflang="en"><span>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/Q25250" title="Enllaç a l'element del repositori de dades connectat [g]" accesskey="g"><span>Element a Wikidata</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="Eines de la pàgina"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <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">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</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">De la Viquipèdia, l'enciclopèdia lliure</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="ca" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r34261971">.mw-parser-output .hatnote{width:100%;border-color:#77ccff;color:var(--color-base,#202122);background-color:#f5f5f5;margin-bottom:1em;font-style:italic}.mw-parser-output .hatnote i{font-style:normal}@media screen{html.skin-theme-clientpref-night .mw-parser-output .hatnote{color:var(--color-inverted,#fff);background-color:var(--background-color-inverted,#101418)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .hatnote{color:var(--color-inverted,#fff);background-color:var(--background-color-inverted,#101418)}}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style> <table class="hatnote" cellspacing="5"> <tbody><tr> <td style="width: 25px; vertical-align: top;"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/22px-Disambig_grey.svg.png" decoding="async" width="22" height="17" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/33px-Disambig_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/44px-Disambig_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></span></span> </td> <td>Aquest article tracta sobre l'unitat de la força electromotriu. Si cerqueu el partit polític paneuropeu, vegeu «<a href="/wiki/Volt_Europa" title="Volt Europa">Volt Europa</a>». </td></tr></tbody></table> <table class="infobox" style="font-size:90%;width:25em"><caption style="font-weight:bold;color: #202122; background-color: #b0d1ad"><span style="float:left;"><span class="skin-invert" typeof="mw:File"><a href="/wiki/Fitxer:Noun_project_1842_flipped.svg" class="mw-file-description" title="Infotaula d'unitat"><img alt="Infotaula d'unitat" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/Noun_project_1842_flipped.svg/25px-Noun_project_1842_flipped.svg.png" decoding="async" width="25" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/26/Noun_project_1842_flipped.svg/38px-Noun_project_1842_flipped.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/26/Noun_project_1842_flipped.svg/50px-Noun_project_1842_flipped.svg.png 2x" data-file-width="100" data-file-height="100" /></a></span></span>Volt</caption><tbody><tr><td colspan="2" class="infobox-full-data infobox-data" style="text-align:center"><span typeof="mw:File"><a href="/w/index.php?title=Fitxer:High_voltage_warning.svg&lang=ca" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/High_voltage_warning.svg/langca-300px-High_voltage_warning.svg.png" decoding="async" width="300" height="252" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/High_voltage_warning.svg/langca-450px-High_voltage_warning.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a9/High_voltage_warning.svg/langca-600px-High_voltage_warning.svg.png 2x" data-file-width="704" data-file-height="591" /></a></span><br />Símbol internacional de "Perill, alta tensió"</td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Tipus</th><td class="infobox-data"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q68618328" class="extiw" title="d:Special:EntityPage/Q68618328">unitat derivada del SI amb nom especial</a>, <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q82047057" class="extiw" title="d:Special:EntityPage/Q82047057">unitat derivada en UCUM</a>, <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q126899076" class="extiw" title="d:Special:EntityPage/Q126899076">unit of electric potential</a> <sup>(en)</sup> <span class="mw-valign-baseline skin-invert" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q126899076?uselang=ca" title="Tradueix"><img alt="Tradueix" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/10px-Noun_Project_label_icon_1116097_cc_mirror.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/15px-Noun_Project_label_icon_1116097_cc_mirror.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/20px-Noun_Project_label_icon_1116097_cc_mirror.svg.png 2x" data-file-width="158" data-file-height="161" /></a></span>, <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q126899121" class="extiw" title="d:Special:EntityPage/Q126899121">unit of electric potential difference</a> <sup>(en)</sup> <span class="mw-valign-baseline skin-invert" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q126899121?uselang=ca" title="Tradueix"><img alt="Tradueix" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/10px-Noun_Project_label_icon_1116097_cc_mirror.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/15px-Noun_Project_label_icon_1116097_cc_mirror.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/20px-Noun_Project_label_icon_1116097_cc_mirror.svg.png 2x" data-file-width="158" data-file-height="161" /></a></span> i <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q126900030" class="extiw" title="d:Special:EntityPage/Q126900030">unit of voltage</a> <sup>(en)</sup> <span class="mw-valign-baseline skin-invert" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q126900030?uselang=ca" title="Tradueix"><img alt="Tradueix" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/10px-Noun_Project_label_icon_1116097_cc_mirror.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/15px-Noun_Project_label_icon_1116097_cc_mirror.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/70/Noun_Project_label_icon_1116097_cc_mirror.svg/20px-Noun_Project_label_icon_1116097_cc_mirror.svg.png 2x" data-file-width="158" data-file-height="161" /></a></span> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q25250?uselang=ca#P31" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Sistema d'unitats</th><td class="infobox-data"><a href="/wiki/Unitat_derivada_del_SI" class="mw-redirect" title="Unitat derivada del SI">Unitat derivada del SI</a></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Unitat de</th><td class="infobox-data"><a href="/wiki/Difer%C3%A8ncia_de_potencial_el%C3%A8ctric" class="mw-redirect" title="Diferència de potencial elèctric">Diferència de potencial elèctric</a><br /><a href="/wiki/For%C3%A7a_electromotriu" title="Força electromotriu">Força electromotriu</a></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">Símbol</th><td class="infobox-data">V</td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><a href="/wiki/Ep%C3%B2nim" title="Epònim">Epònim</a></th><td class="infobox-data"><a href="/wiki/Alessandro_Volta" title="Alessandro Volta">Alessandro Volta</a></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center;color: #202122; background-color: #b0d1ad">Conversions d'unitats</th></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;"><span style="white-space:nowrap;">   </span><a href="/wiki/Unitats_base_del_SI" class="mw-redirect" title="Unitats base del SI">Unitats base del SI</a></th><td class="infobox-data"><span style="white-space:nowrap;">   </span>1 <a href="/wiki/Quilogram" title="Quilogram">kg·</a><a href="/wiki/Metre" title="Metre">m</a>²·<a href="/wiki/Segon" title="Segon">s</a><sup>−3</sup>·<a href="/wiki/Ampere" title="Ampere">A</a><sup>−1</sup></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee;">A unitats del SI</th><td class="infobox-data">1 V <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q25250?uselang=ca#P2370" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr></tbody></table> <p>El <b>volt</b> és la <a href="/wiki/Unitats_derivades_del_SI" title="Unitats derivades del SI">unitat derivada del SI</a> de la <a href="/wiki/Potencial_el%C3%A8ctric" title="Potencial elèctric">diferència de potencial elèctric</a> o <a href="/wiki/For%C3%A7a_electromotriu" title="Força electromotriu">força electromotriu</a>. El seu símbol és <b>V</b>, i rep el seu nom en honor del <a href="/wiki/F%C3%ADsica" title="Física">físic</a> italià <a href="/wiki/Alessandro_Volta" title="Alessandro Volta">Alessandro Volta</a> (<a href="/wiki/1745" title="1745">1745</a>-<a href="/wiki/1827" title="1827">1827</a>). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Definició"><span id="Definici.C3.B3"></span>Definició</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=1" title="Modifica la secció: Definició"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Es defineix com la <a href="/wiki/Difer%C3%A8ncia_de_potencial" title="Diferència de potencial">diferència de potencial</a> al llarg d'un conductor quan un <a href="/wiki/Corrent_el%C3%A8ctric" title="Corrent elèctric">corrent</a> d'un <a href="/wiki/Ampere" title="Ampere">ampere</a> dissipa un <a href="/wiki/Watt" title="Watt">watt</a> de <a href="/wiki/Pot%C3%A8ncia_f%C3%ADsica" class="mw-redirect" title="Potència física">potència</a>. Utilitzant les unitats de base del <a href="/wiki/Sistema_Internacional_d%27Unitats" title="Sistema Internacional d'Unitats">SI</a> seria <a href="/wiki/Metre" title="Metre">m</a>²·<a href="/wiki/Quilogram" title="Quilogram">kg·</a><a href="/wiki/Segon" title="Segon">s</a><sup>−3</sup>·<a href="/wiki/Ampere" title="Ampere">A</a><sup>−1</sup>, que també pot ser representa com un <a href="/wiki/Joule" title="Joule">joule</a> (J) d'<a href="/wiki/Energia" title="Energia">energia</a> per <a href="/wiki/Coulomb" title="Coulomb">coulomb</a> (C) de càrrega, J/C. </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 {\mbox{V}}={\dfrac {\mbox{W}}{\mbox{A}}}={\dfrac {{\mbox{W}}\cdot {\mbox{s}}}{{\mbox{A}}\cdot {\mbox{s}}}}={\dfrac {\mbox{J}}{\mbox{C}}}={\dfrac {{\mbox{N}}\cdot {\mbox{m}}}{{\mbox{A}}\cdot {\mbox{s}}}}={\dfrac {{\mbox{kg}}\cdot {\mbox{m}}^{2}}{{\mbox{A}}\cdot {\mbox{s}}^{3}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>V</mtext> </mstyle> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mfrac> <mstyle displaystyle="false" scriptlevel="0"> <mtext>W</mtext> </mstyle> <mstyle displaystyle="false" scriptlevel="0"> <mtext>A</mtext> </mstyle> </mfrac> </mstyle> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mfrac> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>W</mtext> </mstyle> </mrow> <mo>⋅</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>s</mtext> </mstyle> </mrow> </mrow> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>A</mtext> </mstyle> </mrow> <mo>⋅</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>s</mtext> </mstyle> </mrow> </mrow> </mfrac> </mstyle> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mfrac> <mstyle displaystyle="false" scriptlevel="0"> <mtext>J</mtext> </mstyle> <mstyle displaystyle="false" scriptlevel="0"> <mtext>C</mtext> </mstyle> </mfrac> </mstyle> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mfrac> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>N</mtext> </mstyle> </mrow> <mo>⋅</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>m</mtext> </mstyle> </mrow> </mrow> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>A</mtext> </mstyle> </mrow> <mo>⋅</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>s</mtext> </mstyle> </mrow> </mrow> </mfrac> </mstyle> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mfrac> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>kg</mtext> </mstyle> </mrow> <mo>⋅</mo> <msup> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>m</mtext> </mstyle> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mrow> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>A</mtext> </mstyle> </mrow> <mo>⋅</mo> <msup> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="false" scriptlevel="0"> <mtext>s</mtext> </mstyle> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msup> </mrow> </mfrac> </mstyle> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\mbox{V}}={\dfrac {\mbox{W}}{\mbox{A}}}={\dfrac {{\mbox{W}}\cdot {\mbox{s}}}{{\mbox{A}}\cdot {\mbox{s}}}}={\dfrac {\mbox{J}}{\mbox{C}}}={\dfrac {{\mbox{N}}\cdot {\mbox{m}}}{{\mbox{A}}\cdot {\mbox{s}}}}={\dfrac {{\mbox{kg}}\cdot {\mbox{m}}^{2}}{{\mbox{A}}\cdot {\mbox{s}}^{3}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6a61044aa38b84f6c5511368d69b0a9909c082a5" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.171ex; width:42.884ex; height:6.009ex;" alt="{\displaystyle {\mbox{V}}={\dfrac {\mbox{W}}{\mbox{A}}}={\dfrac {{\mbox{W}}\cdot {\mbox{s}}}{{\mbox{A}}\cdot {\mbox{s}}}}={\dfrac {\mbox{J}}{\mbox{C}}}={\dfrac {{\mbox{N}}\cdot {\mbox{m}}}{{\mbox{A}}\cdot {\mbox{s}}}}={\dfrac {{\mbox{kg}}\cdot {\mbox{m}}^{2}}{{\mbox{A}}\cdot {\mbox{s}}^{3}}}}"></span></dd></dl> <div class="mw-heading mw-heading3"><h3 id="Mesura_en_funció_de_l'efecte_Josephson"><span id="Mesura_en_funci.C3.B3_de_l.27efecte_Josephson"></span>Mesura en funció de l'efecte Josephson</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=2" title="Modifica la secció: Mesura en funció de l'efecte Josephson"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Amb la definició del volt és difícil disposar d'una referència pràctica per a fer les mesures. El <a href="/wiki/1987" title="1987">1987</a>, a la 18<sup>a</sup> <a href="/wiki/Confer%C3%A8ncia_General_de_Pesos_i_Mesures" title="Conferència General de Pesos i Mesures">Conferència General de Pesos i Mesures</a> es va decidir utilitzar l'<a href="/wiki/Efecte_Josephson" title="Efecte Josephson">efecte Josephson</a> i es va instar a trobar un valor per a la <a href="/wiki/Constant_de_Josephson" class="mw-redirect" title="Constant de Josephson">constant de Josephson</a><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> que havia de servir com a per a la mesura i que havia d'entrar en vigor el primer de gener del <a href="/wiki/1990" title="1990">1990</a>, un any abans de la següent Conferència. </p><p>El <a href="/wiki/1991" title="1991">1991</a> la 19<sup>a</sup> Conferència General de Pesos i Mesures va adoptar el valor proposat pel CIPM per a la constant de Josephson:<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<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 K_{j}-90={\frac {2e}{h}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>K</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>j</mi> </mrow> </msub> <mo>−</mo> <mn>90</mn> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>2</mn> <mi>e</mi> </mrow> <mi>h</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle K_{j}-90={\frac {2e}{h}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7cafcdfc40ea93ffceda29b418bbe01296f667b9" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:14.229ex; height:5.343ex;" alt="{\displaystyle K_{j}-90={\frac {2e}{h}}}"></span> = 4,835979 10¹⁴ <a href="/wiki/Hertz" title="Hertz">Hz</a>/V = 0,4835979 GHz/μV.</dd></dl> <p>Això permet disposar d'una referència de la mesura d'un volt a una freqüència precisa.<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> <div class="mw-heading mw-heading2"><h2 id="Descripció"><span id="Descripci.C3.B3"></span>Descripció</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=3" title="Modifica la secció: Descripció"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La diferència de potencial elèctric es pot imaginar com la facultat de moure càrregues elèctriques a través d'una resistència. En essència, el volt mesura la quantitat d'<a href="/wiki/Energia_cin%C3%A8tica" title="Energia cinètica">energia cinètica</a> que transporta cada <a href="/wiki/Electr%C3%B3" title="Electró">electró</a>. El nombre d'electrons es mesura com a càrrega elèctrica, en <a href="/wiki/Coulomb" title="Coulomb">coulombs</a>. El volt es pot multiplicar pel flux corrent, mesurat en <a href="/wiki/Ampere" title="Ampere">amperes</a> (que són coulombs per <a href="/wiki/Segon" title="Segon">segon</a>) per tal d'obtenir el <a href="/wiki/Potencial_el%C3%A8ctric" title="Potencial elèctric">potencial elèctric</a> total del corrent en <a href="/wiki/Watt" title="Watt">watts</a>. La diferència de potencial elèctric va ser anomenada <a href="/wiki/For%C3%A7a_electromotriu" title="Força electromotriu">força electromotriu</a> o <b>fem</b> en una època en què en el món de la <a href="/wiki/F%C3%ADsica" title="Física">física</a> s'utilitzava el mot <i>força</i> de manera poc acurada, avui dia aquest terme encara s'utilitza en algun context. </p> <div class="mw-heading mw-heading3"><h3 id="Diferència_de_potencial_elèctric"><span id="Difer.C3.A8ncia_de_potencial_el.C3.A8ctric"></span>Diferència de potencial elèctric</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=4" title="Modifica la secció: Diferència de potencial elèctric"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Entre dos punts d'un <a href="/wiki/Camp_el%C3%A8ctric" title="Camp elèctric">camp elèctric</a>, com el que existeix a un <a href="/wiki/Circuit_el%C3%A8ctric" title="Circuit elèctric">circuit elèctric</a>, la diferència de potencial és igual a la diferència del seu <a href="/wiki/Potencial_el%C3%A8ctric" title="Potencial elèctric">potencial elèctric</a>. Aquesta diferència és proporcional a la <a href="/wiki/Llei_de_Coulomb" title="Llei de Coulomb">força electroestàtica</a> que tendeix a empènyer els electrons o d'altres portadors de <a href="/wiki/C%C3%A0rrega_el%C3%A8ctrica" title="Càrrega elèctrica">càrrega elèctrica</a> d'un punt a un altre. La diferència de potencial, el potencial elèctric i la <a href="/wiki/For%C3%A7a_electromotriu" title="Força electromotriu">força electromotriu</a> es mesuren en <b>volts</b>, habitualment es denomina voltatge i se simbolitza amb <i>V</i>, tot i que de vegades s'utilitza <i><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 {\mathcal {E}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mi class="MJX-tex-caligraphic" mathvariant="script">E</mi> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\mathcal {E}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9c298ed828ff778065aeb5f0f305097f55bb9ae0" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.311ex; height:2.176ex;" alt="{\displaystyle {\mathcal {E}}}"></span></i>, especialment per a la força electromotriu. </p><p>El voltatge és additiu en el sentit que el voltatge entre <i>A</i> i <i>C</i> és igual a la suma del voltatge entre <i>A</i> i <i>B</i> amb el voltatge entre <i>B</i> i <i>C</i>. Els diferents voltatges que pot haver-hi al llarg d'un circuit elèctric poden ser determinats utilitzant les <a href="/wiki/Lleis_de_Kirchhoff" title="Lleis de Kirchhoff">lleis de Kirchhoff</a>. </p><p>El voltatge és una propietat inherent a un camp elèctric, no als electrons individualment. Un electró que es mou a través d'una diferència de potencial experimenta un canvi net de la seva energia, que habitualment es mesura en <a href="/wiki/Electronvolt" class="mw-redirect" title="Electronvolt">electronvolt</a>. Aquest efecte és anàleg a un massa que cau des d'una altura determinada a un <a href="/wiki/Camp_gravitatori" title="Camp gravitatori">camp gravitatori</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Analogia_hidràulica"><span id="Analogia_hidr.C3.A0ulica"></span>Analogia hidràulica</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=5" title="Modifica la secció: Analogia hidràulica"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r30997230">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}</style><div role="note" class="hatnote navigation-not-searchable">Article principal: <a href="/w/index.php?title=Analogia_hidr%C3%A0ulica&action=edit&redlink=1" class="new" title="Analogia hidràulica (encara no existeix)">Analogia hidràulica</a></div> <p>Si es pensa en un circuit elèctric de manera <a href="/wiki/Analogia" title="Analogia">anàloga</a> a un circuit de tubs pels quals circula <a href="/wiki/Aigua" title="Aigua">aigua</a> impulsada per <a href="/wiki/Bomba_(enginyeria)" title="Bomba (enginyeria)">bombes</a> en absència de <a href="/wiki/Gravetat" title="Gravetat">gravetat</a>, la diferència de potencial correspondria a la diferència de <a href="/wiki/Pressi%C3%B3" title="Pressió">pressió</a> al fluid entre dos punts diferents. Si hi ha una diferència de pressió entre dos punts, llavors l'aigua circularà del primer punt vers el segon i serà capaç de fer un <a href="/wiki/Treball_f%C3%ADsic" class="mw-redirect" title="Treball físic">treball</a>, com podria ser moure una <a href="/wiki/Turbina" title="Turbina">turbina</a>. </p><p>Aquesta analogia és un bon mètode per explicar un bon nombre de conceptes elèctrics. A un sistema hidràulic, el treball fet per moure l'aigua és igual a la pressió multiplicada pel <a href="/wiki/Volum" title="Volum">volum</a> d'aigua mogut. De manera similar, a un circuit elèctric, el treball que es fa per moure electrons o d'altres portadors de càrregues és igual a la <i>pressió elèctrica</i> (un antic terme per al que avui coneixem com a voltatge) multiplicada per la quantitat de <a href="/wiki/C%C3%A0rrega_el%C3%A8ctrica" title="Càrrega elèctrica">càrrega elèctrica</a> moguda. Per tant, el voltatge és una bona manera per a quantificar la potencialitat de fer un treball físic. </p> <div class="mw-heading mw-heading3"><h3 id="Definició_tècnica"><span id="Definici.C3.B3_t.C3.A8cnica"></span>Definició tècnica</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=6" title="Modifica la secció: Definició tècnica"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La diferència de potencial elèctric es defineix com la quantitat d'<a href="/wiki/Energia" title="Energia">energia</a> per unitat de càrrega necessària per a moure una càrrega elèctrica d'un punt a un altre, o de manera equivalent, com la quantitat de treball que una càrrega elèctrica pot fer en passar del primer al segon punt. La diferència de potencial entre dos punts <i>a</i> i <i>b</i> és la <a href="/wiki/Integral_curvil%C3%ADnia" title="Integral curvilínia">integral curvilínia</a> del <a href="/wiki/Camp_el%C3%A8ctric" title="Camp elèctric">camp elèctric</a> <b>E</b>: </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_{a}-V_{b}=\int _{a}^{b}\mathbf {E} \cdot d\mathbf {l} =\int _{a}^{b}E\cos \phi dl.}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>a</mi> </mrow> </msub> <mo>−</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>b</mi> </mrow> </msub> <mo>=</mo> <msubsup> <mo>∫</mo> <mrow class="MJX-TeXAtom-ORD"> <mi>a</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi>b</mi> </mrow> </msubsup> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">E</mi> </mrow> <mo>⋅</mo> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mi mathvariant="bold">l</mi> </mrow> <mo>=</mo> <msubsup> <mo>∫</mo> <mrow class="MJX-TeXAtom-ORD"> <mi>a</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi>b</mi> </mrow> </msubsup> <mi>E</mi> <mi>cos</mi> <mo>⁡</mo> <mi>ϕ</mi> <mi>d</mi> <mi>l</mi> <mo>.</mo> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{a}-V_{b}=\int _{a}^{b}\mathbf {E} \cdot d\mathbf {l} =\int _{a}^{b}E\cos \phi dl.}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/011686244977724975b91a6d59c0d2e27864dd3b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:36.361ex; height:6.343ex;" alt="{\displaystyle V_{a}-V_{b}=\int _{a}^{b}\mathbf {E} \cdot d\mathbf {l} =\int _{a}^{b}E\cos \phi dl.}"></span></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Múltiples_i_submultiples"><span id="M.C3.BAltiples_i_submultiples"></span>Múltiples i submultiples</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=7" title="Modifica la secció: Múltiples i submultiples"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th>Múltiple </th> <th>Nom </th> <th>Símbol </th> <th> </th> <th>Submúltiple </th> <th>Nom </th> <th>Símbol </th></tr> <tr> <td>10<sup>0</sup></td> <td><b>volt</b></td> <td>V</td> <td rowspan="11"></td> <td>  </td> <td> </td> <td>  </td></tr> <tr> <td>10¹</td> <td>decavolt</td> <td>daV</td> <td>10<sup>−1</sup></td> <td>decivolt </td> <td>dV </td></tr> <tr> <td>10²</td> <td>hectovolt</td> <td>hV</td> <td>10<sup>−2</sup></td> <td>centivolt </td> <td>cV </td></tr> <tr> <td>10<sup>3</sup></td> <td>quilovolt</td> <td>kV</td> <td>10<sup>−3</sup></td> <td>mil·livolt </td> <td>mV </td></tr> <tr> <td>10⁶</td> <td>megavolt</td> <td>MV</td> <td>10<sup>−6</sup></td> <td>microvolt </td> <td>µV </td></tr> <tr> <td>10⁹</td> <td>gigavolt</td> <td>GV</td> <td>10<sup>−9</sup></td> <td>nanovolt </td> <td>nV </td></tr> <tr> <td>10<sup>12</sup></td> <td>teravolt</td> <td>TV</td> <td>10<sup>−12</sup></td> <td>picovolt </td> <td>pV </td></tr> <tr> <td>10<sup>15</sup></td> <td>petavolt</td> <td>PV</td> <td>10<sup>−15</sup></td> <td>femtovolt </td> <td>fV </td></tr> <tr> <td>10<sup>18</sup></td> <td>exavolt</td> <td>EV</td> <td>10<sup>−18</sup></td> <td>attovolt </td> <td>aV </td></tr> <tr> <td>10<sup>21</sup></td> <td>zettavolt</td> <td>ZV</td> <td>10<sup>−21</sup></td> <td>zeptovolt </td> <td>zV </td></tr> <tr> <td>10<sup>24</sup></td> <td>yottavolt</td> <td>YV</td> <td>10<sup>−24</sup></td> <td>yoctovolt </td> <td>yV </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Voltatges_comuns">Voltatges comuns</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=8" title="Modifica la secció: Voltatges comuns"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Digital_Multimeter_Aka.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Digital_Multimeter_Aka.jpg/220px-Digital_Multimeter_Aka.jpg" decoding="async" width="220" height="262" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Digital_Multimeter_Aka.jpg/330px-Digital_Multimeter_Aka.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a6/Digital_Multimeter_Aka.jpg/440px-Digital_Multimeter_Aka.jpg 2x" data-file-width="672" data-file-height="800" /></a><figcaption><a href="/wiki/Mult%C3%ADmetre" class="mw-redirect" title="Multímetre">Multímetre</a> amb què es poden mesurar diferents fenòmens elèctrics, incloent-hi el <a href="/wiki/Voltatge" class="mw-redirect" title="Voltatge">voltatge</a>.</figcaption></figure> <table class="wikitable" border="1"> <tbody><tr> <th>Aparell </th> <th>Voltatge </th></tr> <tr> <td><a href="/wiki/Potencial_d%27acci%C3%B3" title="Potencial d'acció">Potencial d'acció</a> d'una <a href="/wiki/Neurona" title="Neurona">neurona</a> </td> <td>a prop de 75 mV </td></tr> <tr bgcolor="#EFEFEF"> <td>Bateria de cèl·lula simple </td> <td>1,2 V </td></tr> <tr> <td>Bateria de mercuri </td> <td>1,355 V </td></tr> <tr bgcolor="#EFEFEF"> <td>Bateria alcalina no recarregable </td> <td>1,5 V </td></tr> <tr> <td>Bateria recarregable de liti </td> <td>3,75 V </td></tr> <tr bgcolor="#EFEFEF"> <td>Transistor de <a href="/wiki/Tecnologia_TTL" title="Tecnologia TTL">tecnologia TTL</a> </td> <td>5 V </td></tr> <tr> <td>Bateria PP3 </td> <td>9 V </td></tr> <tr bgcolor="#EFEFEF"> <td>Sistema elèctric d'un <a href="/wiki/Autom%C3%B2bil" title="Automòbil">automòbil</a> </td> <td>12 V </td></tr> <tr> <td>Electricitat central d'un habitatge </td> <td>240 V a Oceania; 230 V Europa, Àsia, Àfrica; <p>120 V Nord-amèrica; 110 V Sud-amèrica (menys Argentina, Xile i el Perú 220 V), 100 V Japó </p> </td></tr> <tr bgcolor="#EFEFEF"> <td><a href="/wiki/Via_f%C3%A8rria" title="Via fèrria">Rails del tren</a> </td> <td>600 a 700 V </td></tr> <tr> <td>Línies de potència de <a href="/wiki/Tren" title="Tren">trens</a> d'alt voltatge </td> <td>aprox. 25 kV </td></tr> <tr bgcolor="#EFEFEF"> <td><a href="/wiki/Xarxa_de_distribuci%C3%B3_d%27energia_el%C3%A8ctrica" title="Xarxa de distribució d'energia elèctrica">Xarxa de distribució d'energia elèctrica</a> d'alt voltatge </td> <td>110 kV o més </td></tr> <tr> <td><a href="/wiki/Llamp" title="Llamp">Llamps</a> </td> <td>100 MV </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Història"><span id="Hist.C3.B2ria"></span>Història</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=9" title="Modifica la secció: Història"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Alessandro_Volta.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Alessandro_Volta.jpeg/170px-Alessandro_Volta.jpeg" decoding="async" width="170" height="209" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Alessandro_Volta.jpeg/255px-Alessandro_Volta.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/52/Alessandro_Volta.jpeg/340px-Alessandro_Volta.jpeg 2x" data-file-width="390" data-file-height="480" /></a><figcaption>Alessandro Volta</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/98/PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png/220px-PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/98/PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png/330px-PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/98/PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png/440px-PSM_V85_D521_Group_photograph_of_herman_helmholtz_and_academic_friends.png 2x" data-file-width="2719" data-file-height="1580" /></a><figcaption>Fotografia de grup d'<a href="/wiki/Hermann_von_Helmholtz" title="Hermann von Helmholtz">Hermann Helmholtz</a>, la seva dona (assegut) i els seus amics acadèmics <a href="/w/index.php?title=Hugo_Kronecker&action=edit&redlink=1" class="new" title="Hugo Kronecker (encara no existeix)">Hugo Kronecker</a> (esquerra), <a href="/w/index.php?title=Thomas_Corwin_Mendenhall&action=edit&redlink=1" class="new" title="Thomas Corwin Mendenhall (encara no existeix)">Thomas Corwin Mendenhall</a> (dreta), <a href="/w/index.php?title=Henry_Villard&action=edit&redlink=1" class="new" title="Henry Villard (encara no existeix)">Henry Villard</a> (centre) durant el Congrés Internacional d'Electricitat</figcaption></figure> <p>L'any <a href="/wiki/1800" title="1800">1800</a>, com a resultat d'un desacord professional sobre el <a href="/wiki/Galvanisme" title="Galvanisme">galvanisme</a> que propugnava <a href="/wiki/Luigi_Galvani" title="Luigi Galvani">Luigi Galvani</a>, <a href="/wiki/Alessandro_Volta" title="Alessandro Volta">Alessandro Volta</a> va desenvolupar la <a href="/wiki/Pila_voltaica" title="Pila voltaica">pila voltaica</a> un precursor de la <a href="/wiki/Bateria_el%C3%A8ctrica" title="Bateria elèctrica">bateria elèctrica</a>, que produïa un <a href="/wiki/Corrent_el%C3%A8ctric" title="Corrent elèctric">corrent</a> estable. Volta va determinar que el parell de <a href="/wiki/Metalls" class="mw-redirect" title="Metalls">metalls</a> més efectiu per a la producció d'electricitat era el <a href="/wiki/Zinc" title="Zinc">zinc</a> i la <a href="/wiki/Plata" class="mw-redirect" title="Plata">plata</a>. Durant els anys 80 del <a href="/wiki/Segle_XIX" title="Segle XIX">segle <span title="Nombre escrit en xifres romanes" style="font-variant:small-caps;">xix</span></a> l'<i>International Electrical Congress</i>, avui dia <a href="/wiki/Comissi%C3%B3_Electrot%C3%A8cnica_Internacional" title="Comissió Electrotècnica Internacional">Comissió Electrotècnica Internacional</a>, va aprovar el volt com a unitat de <a href="/wiki/For%C3%A7a_electromotriu" title="Força electromotriu">força electromotriu</a>. En aquell moment es va definir el volt com la diferència de potencial al llarg d'un conductor quan un corrent d'un <a href="/wiki/Ampere" title="Ampere">ampere</a> dissipa un <a href="/wiki/Watt" title="Watt">watt</a> de potència. Volta havia determinat que el parell de metalls diferents més eficaç per produir electricitat era el <a href="/wiki/Zinc" title="Zinc">zinc</a> i la <a href="/wiki/Plata" class="mw-redirect" title="Plata">plata</a>. El 1861, <a href="/w/index.php?title=Latimer_Clark&action=edit&redlink=1" class="new" title="Latimer Clark (encara no existeix)">Latimer Clark</a> i Sir <a href="/w/index.php?title=Charles_Tilston_Bright&action=edit&redlink=1" class="new" title="Charles Tilston Bright (encara no existeix)">Charles Bright</a> van encunyar el nom "volt" per a la unitat de resistència.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> El 1873, l'Associació Britànica per a l'Avenç de la Ciència havia definit el volt, l'ohm i el farad.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> El 1881, el Congrés Elèctric Internacional, ara la <a href="/wiki/Comissi%C3%B3_Electrot%C3%A8cnica_Internacional" title="Comissió Electrotècnica Internacional">Comissió Electrotècnica Internacional</a> (IEC), va aprovar el volt com a unitat de força electromotriu.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Van fer el volt igual a 10<sup>8</sup> <a href="/wiki/Sistema_CGS" title="Sistema CGS">unitats cgs</a> de tensió, el sistema cgs en aquell moment era el sistema habitual d'unitats de la ciència. Van triar aquesta relació perquè la unitat de tensió cgs és inconvenientment petita i un volt en aquesta definició és aproximadament l'emf d'una <a href="/w/index.php?title=Cel%C2%B7la_Daniell&action=edit&redlink=1" class="new" title="Cel·la Daniell (encara no existeix)">cel·la Daniell</a>, la font estàndard de tensió en els sistemes telègrafs de l'època.<sup id="cite_ref-Hamer_7-0" class="reference"><a href="#cite_note-Hamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> En aquell moment, el volt es va definir com la diferència de potencial [és a dir, el que avui dia s'anomena "tensió (diferència)"] a través d'un conductor quan un corrent d'un <a href="/wiki/Ampere" title="Ampere">ampere</a> dissipa un <a href="/wiki/Watt" title="Watt">watt</a> de potència. </p><p>El <a href="/wiki/1893" title="1893">1893</a> es va definir el <i>volt internacional</i> com 1/1,434 de la força electromotriu (fem) d'una <a href="/w/index.php?title=Cel%C2%B7la_Clark&action=edit&redlink=1" class="new" title="Cel·la Clark (encara no existeix)">cel·la Clark</a>. Aquesta definició va ser abandonada el <a href="/wiki/1908" title="1908">1908</a> en favor d'una definició basada en l'<i>ohm internacional</i> i en l'<i>ampere internacional</i>, aquesta definició va ser abandonada el 1948.<sup id="cite_ref-BLR47.12_8-0" class="reference"><a href="#cite_note-BLR47.12-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>Abans del desenvolupament del voltatge estàndard basar en la junció de Josephson, el volt era mantingut a laboratoris de diferents països basant-se en la utilització de bateries especials, les <i>cel·les estàndard</i> que eren <a href="/w/index.php?title=Cel%C2%B7la_Weston&action=edit&redlink=1" class="new" title="Cel·la Weston (encara no existeix)">cel·les Weston</a>. Una cel·la Weston a una <a href="/wiki/Temperatura" title="Temperatura">temperatura</a> de 20 <a href="/wiki/Grau_Celsius" title="Grau Celsius">°C</a> generava un voltatge d'1,01865 volts. </p><p>En el <a href="/wiki/Sistema_Internacional_d%27Unitats" title="Sistema Internacional d'Unitats">SI</a> la unitat porta el nom d'<a href="/wiki/Alessandro_Volta" title="Alessandro Volta">Alessandro Volta</a>. Com altres unitats del SI, es denomina amb el nom propi de la persona, que el descobreix. La primera lletra del seu <a href="/wiki/S%C3%ADmbol" title="Símbol">símbol</a> va en majúscula (<b>V</b>). Com a unitat del SI, el nom ha de començar amb una lletra minúscula (<b>volt</b>), llevat que la paraula estigui al principi d'una frase o sigui un títol. </p><p>El 20 de maig de 2019 va entrar en vigor una <a href="/w/index.php?title=Redefinici%C3%B3_2019_de_les_unitats_base_SI&action=edit&redlink=1" class="new" title="Redefinició 2019 de les unitats base SI (encara no existeix)">redefinició de les unitats base SI</a>, inclosa la definició del valor de la <a href="/wiki/C%C3%A0rrega_elemental" class="mw-redirect" title="Càrrega elemental">càrrega elemental</a>.<sup id="cite_ref-draft-resolution-A_9-0" class="reference"><a href="#cite_note-draft-resolution-A-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Fórmules_útils"><span id="F.C3.B3rmules_.C3.BAtils"></span>Fórmules útils</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=10" title="Modifica la secció: Fórmules útils"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Circuits_de_corrent_continu">Circuits de corrent continu</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=11" title="Modifica la secció: Circuits de corrent continu"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>En els <a href="/wiki/Circuit_el%C3%A8ctric" title="Circuit elèctric">circuits elèctrics</a> de <a href="/wiki/Corrent_continu" title="Corrent continu">corrent continu</a> es verifica que: </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={\sqrt {PR}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mi>P</mi> <mi>R</mi> </msqrt> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V={\sqrt {PR}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6aae9b9e3f6825173410da8e314d7205bb6ded0e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:10.331ex; height:3.009ex;" alt="{\displaystyle V={\sqrt {PR}}}"></span></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 V={\frac {P}{I}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>P</mi> <mi>I</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V={\frac {P}{I}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/5b8058ba60713223cf92bb361eaf2ef0036d7b54" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:7.467ex; height:5.176ex;" alt="{\displaystyle V={\frac {P}{I}}}"></span></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 V=IR\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mi>I</mi> <mi>R</mi> <mspace width="negativethinmathspace" /> <mtext> </mtext> </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/01a0d6bb5ae4a43ac3cda40ee8ce8c69ef7ff623" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:8.015ex; height:2.176ex;" alt="{\displaystyle V=IR\!\ }"></span></dd></dl> <p>On V és el voltage, I és el corrent elèctric, R és la <a href="/wiki/Resist%C3%A8ncia_el%C3%A8ctrica_(propietat)" title="Resistència elèctrica (propietat)">resistència elèctrica</a> i P és la potència elèctrica. </p> <div class="mw-heading mw-heading3"><h3 id="Circuits_de_corrent_altern">Circuits de corrent altern</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=12" title="Modifica la secció: Circuits de corrent altern"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>En els circuits elèctrics de <a href="/wiki/Corrent_altern" title="Corrent altern">corrent altern</a> es verifica que: </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={\frac {P}{I\cos \theta }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mi>P</mi> <mrow> <mi>I</mi> <mi>cos</mi> <mo>⁡</mo> <mi>θ</mi> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V={\frac {P}{I\cos \theta }}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e222d895e9ae5f9bd7d8967cdb49fc017839e4dd" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:11.869ex; height:5.343ex;" alt="{\displaystyle V={\frac {P}{I\cos \theta }}}"></span></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 V={\frac {\sqrt {PZ}}{\sqrt {\cos \theta }}}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <msqrt> <mi>P</mi> <mi>Z</mi> </msqrt> <msqrt> <mi>cos</mi> <mo>⁡</mo> <mi>θ</mi> </msqrt> </mfrac> </mrow> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V={\frac {\sqrt {PZ}}{\sqrt {\cos \theta }}}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1d8361ff16cab7641236aa2c15c3253471ecdca4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.838ex; width:12.44ex; height:6.843ex;" alt="{\displaystyle V={\frac {\sqrt {PZ}}{\sqrt {\cos \theta }}}\!\ }"></span></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 V={\frac {IR}{\cos \theta }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi>I</mi> <mi>R</mi> </mrow> <mrow> <mi>cos</mi> <mo>⁡</mo> <mi>θ</mi> </mrow> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V={\frac {IR}{\cos \theta }}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/87c253a4aa7284bb59d1a83c4423cea092be0bf3" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.005ex; width:10.31ex; height:5.343ex;" alt="{\displaystyle V={\frac {IR}{\cos \theta }}}"></span></dd></dl> <p>On V és el voltage, I és el corrent elèctric, R és la resistència elèctrica, P és la potència elèctrica efectiva, Z és la <a href="/wiki/Imped%C3%A0ncia" title="Impedància">impedància</a> i θ l'angle de fase (<a href="/wiki/Fasor" title="Fasor">fasor</a>). </p> <div class="mw-heading mw-heading3"><h3 id="Conversions_en_corrent_altern">Conversions en corrent altern</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=13" title="Modifica la secció: Conversions en corrent altern"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Sine_voltage.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Sine_voltage.svg/220px-Sine_voltage.svg.png" decoding="async" width="220" height="229" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Sine_voltage.svg/330px-Sine_voltage.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Sine_voltage.svg/440px-Sine_voltage.svg.png 2x" data-file-width="816" data-file-height="850" /></a><figcaption>Voltatge altern sinusoidal <br />1 = Amplitud, <br />2 = Amplitud pic a pic, <br />3 = Amplitud eficaç, <br />4 = Període</figcaption></figure> <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_{mig}=,637V_{pic}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>m</mi> <mi>i</mi> <mi>g</mi> </mrow> </msub> <mo>=</mo> <mo>,</mo> <mn>637</mn> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>i</mi> <mi>c</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{mig}=,637V_{pic}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1a8d3432a339fb1d0cbe11c629681ece839b24ad" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:15.249ex; height:2.843ex;" alt="{\displaystyle V_{mig}=,637V_{pic}\!\ }"></span></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 V_{efect}=,707V_{pic}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> <mi>f</mi> <mi>e</mi> <mi>c</mi> <mi>t</mi> </mrow> </msub> <mo>=</mo> <mo>,</mo> <mn>707</mn> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>i</mi> <mi>c</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{efect}=,707V_{pic}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3db75f43348f7553cfe3423d6eb822fb14269cd4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:16.191ex; height:2.843ex;" alt="{\displaystyle V_{efect}=,707V_{pic}\!\ }"></span></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 V_{efect}=,354V_{ppic}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> <mi>f</mi> <mi>e</mi> <mi>c</mi> <mi>t</mi> </mrow> </msub> <mo>=</mo> <mo>,</mo> <mn>354</mn> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>p</mi> <mi>i</mi> <mi>c</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{efect}=,354V_{ppic}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/c206ee525cc0b953b65b351bfe11b86fc80d98c9" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:17.018ex; height:2.843ex;" alt="{\displaystyle V_{efect}=,354V_{ppic}\!\ }"></span></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 V_{mig}=,319V_{ppic}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>m</mi> <mi>i</mi> <mi>g</mi> </mrow> </msub> <mo>=</mo> <mo>,</mo> <mn>319</mn> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>p</mi> <mi>i</mi> <mi>c</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{mig}=,319V_{ppic}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d50786acd2d0e959fc515778d22dcdc6fbb5a825" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:16.076ex; height:2.843ex;" alt="{\displaystyle V_{mig}=,319V_{ppic}\!\ }"></span></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 V_{mig}=,9V_{mig}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>m</mi> <mi>i</mi> <mi>g</mi> </mrow> </msub> <mo>=</mo> <mo>,</mo> <mn>9</mn> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>m</mi> <mi>i</mi> <mi>g</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{mig}=,9V_{mig}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/84cfbcade72533fd56b73ade43bc690c8464334f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:13.617ex; height:2.843ex;" alt="{\displaystyle V_{mig}=,9V_{mig}\!\ }"></span></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 V_{pic}=,5V_{ppic}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>i</mi> <mi>c</mi> </mrow> </msub> <mo>=</mo> <mo>,</mo> <mn>5</mn> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>p</mi> <mi>p</mi> <mi>i</mi> <mi>c</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{pic}=,5V_{ppic}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/ca04f3313653f7d770c35896003ffe5e1dd52937" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:13.058ex; height:2.843ex;" alt="{\displaystyle V_{pic}=,5V_{ppic}\!\ }"></span></dd></dl> <p>On <i>Vpic</i> és el pic de voltatge, <i>Vppic</i> és el valor del voltatge <i>pic a pic</i>, <i>Vmig</i> és el valor mitjà del voltatge, <i>Vefect</i> és al valor del voltatge efectiu. </p> <div class="mw-heading mw-heading3"><h3 id="Voltatge_total">Voltatge total</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=14" title="Modifica la secció: Voltatge total"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Fonts de voltatge i caigudes en un <a href="/wiki/Circuit_en_s%C3%A8rie" title="Circuit en sèrie">circuit elèctric en sèrie</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 V_{T}=V_{1}+V_{2}+V_{3}+V_{4}+...\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>T</mi> </mrow> </msub> <mo>=</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> <mo>+</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msub> <mo>+</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msub> <mo>+</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msub> <mo>+</mo> <mo>.</mo> <mo>.</mo> <mo>.</mo> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{T}=V_{1}+V_{2}+V_{3}+V_{4}+...\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/32e5775ca6e5353f8bbbd589f294dd9da8b9baed" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:29.106ex; height:2.509ex;" alt="{\displaystyle V_{T}=V_{1}+V_{2}+V_{3}+V_{4}+...\!\ }"></span></dd></dl> <p>Fonts de voltatge i caigudes en un <a href="/wiki/Circuit_en_paral%C2%B7lel" title="Circuit en paral·lel">circuit elèctric en paral·lel</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 V_{T}=V_{1}=V_{2}=V_{3}=V_{4}=...\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>T</mi> </mrow> </msub> <mo>=</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>1</mn> </mrow> </msub> <mo>=</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msub> <mo>=</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msub> <mo>=</mo> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>4</mn> </mrow> </msub> <mo>=</mo> <mo>.</mo> <mo>.</mo> <mo>.</mo> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{T}=V_{1}=V_{2}=V_{3}=V_{4}=...\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0c3a8105b325c04359029fbbd26d9c566d0e88f0" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:30.525ex; height:2.509ex;" alt="{\displaystyle V_{T}=V_{1}=V_{2}=V_{3}=V_{4}=...\!\ }"></span></dd></dl> <div class="mw-heading mw-heading3"><h3 id="Caiguda_de_tensió"><span id="Caiguda_de_tensi.C3.B3"></span>Caiguda de tensió</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=15" title="Modifica la secció: Caiguda de tensió"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La caiguda de tensió per a alguns <a href="/wiki/Components" class="mw-redirect mw-disambig" title="Components">components</a> és: </p> <ul><li>A una <a href="/wiki/Resist%C3%A8ncia_el%C3%A8ctrica_(component)" title="Resistència elèctrica (component)">resistència</a> <i>r</i></li></ul> <dl><dd><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_{r}=IR_{r}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>r</mi> </mrow> </msub> <mo>=</mo> <mi>I</mi> <msub> <mi>R</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>r</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{r}=IR_{r}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7eefd3f25dcac0b9bd01e202d1186b4e9e14eb7e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:9.531ex; height:2.509ex;" alt="{\displaystyle V_{r}=IR_{r}\!\ }"></span></dd></dl></dd></dl> <ul><li>A un <a href="/wiki/Condensador" title="Condensador">condensador</a> <i>c</i></li></ul> <dl><dd><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_{c}=IX_{c}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>c</mi> </mrow> </msub> <mo>=</mo> <mi>I</mi> <msub> <mi>X</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>c</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{c}=IX_{c}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/561d6ecd2b38db47812478a7bbeab7437fd10767" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:9.632ex; height:2.509ex;" alt="{\displaystyle V_{c}=IX_{c}\!\ }"></span></dd></dl></dd></dl> <ul><li>A un <a href="/wiki/Inductor" title="Inductor">inductor</a> <i>i</i></li></ul> <dl><dd><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_{i}=IX_{i}\!\ }"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>V</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>i</mi> </mrow> </msub> <mo>=</mo> <mi>I</mi> <msub> <mi>X</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>i</mi> </mrow> </msub> <mspace width="negativethinmathspace" /> <mtext> </mtext> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V_{i}=IX_{i}\!\ }</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e47dda5b95bb85bf91b419f1abaaae52be027f45" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:9.343ex; height:2.509ex;" alt="{\displaystyle V_{i}=IX_{i}\!\ }"></span></dd></dl></dd></dl> <p>On V és el voltage, I és el corrent elèctric, R és la resistència elèctrica (la propietat) i X és la <a href="/wiki/React%C3%A0ncia" title="Reactància">reactància</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Vegeu_també"><span id="Vegeu_tamb.C3.A9"></span>Vegeu també</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=16" title="Modifica la secció: Vegeu també"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Ampere" title="Ampere">Ampere</a></li> <li><a href="/wiki/Difer%C3%A8ncia_de_potencial" title="Diferència de potencial">Diferència de potencial</a></li> <li><a href="/wiki/Volt%C3%ADmetre" title="Voltímetre">Voltímetre</a></li> <li><a href="/wiki/Watt" title="Watt">Watt</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes_i_referències"><span id="Notes_i_refer.C3.A8ncies"></span>Notes i referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=17" title="Modifica la secció: Notes i referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist {{#if: | references-column-count references-column-count-{{{col}}}" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bipm.org/jsp/en/ViewCGPMResolution.jsp?CGPM=18&RES=6">Resolució 6 de la 18ª CGPM (1987) sobre la utilització de la constant de Josephson</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bipm.org/en/CGPM/db/19/2/">Resolució 2 de la 19ª CGPM (1991) que fixa un valor per a la constant de Josephson</a></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.lne.fr/fr/r_et_d/metrologie_electrique/metrologie_electrique_quantique_EJ.shtml">Laboratoire National de métrologie et d'essai, <i>Représentation du Volt par l'effet Josephon</i></a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20051104012822/http://www.lne.fr/fr/r_et_d/metrologie_electrique/metrologie_electrique_quantique_EJ.shtml">Arxivat</a> 2005-11-04 a <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. <style data-mw-deduplicate="TemplateStyles:r33711417">.mw-parser-output .languageicon{font-size:0.95em;color:#555;background-color:inherit}@media screen{html.skin-theme-clientpref-night .mw-parser-output .languageicon{background-color:inherit;color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .languageicon{background-color:inherit;color:white}}</style><span class="languageicon" title="En francès">(francès)</span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">Com a noms per a unitats de diverses magnituds elèctriques, Bright i Clark van suggerir "ohma" per a la tensió, "farad" per a càrrega, "galvat" per a corrent i "volt" per a la resistència. Vegeu: <ul><li>Latimer Clark i Sir Charles Bright (1861) <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/item/93052#page/483/mode/1up">"On the formation of standards of electrical quantity and resistance,"</a> <i>Report of the Thirty-first Meeting of the British Association for the Advancement of Science</i> (Manchester, England: September 1861), section: Mathematics and Physics, pp. 37-38.</li> <li>Latimer Clark and Sir Charles Bright (November 9, 1861) <a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/pt?id=nyp.33433090837166;view=1up;seq=15">"Measurement of electrical quantities and resistance,"</a> <i>The Electrician</i>, <b>1</b> (1) : 3–4.</li></ul> </span></li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text">Sir W. Thomson, et al. (1873) <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/page/29853513#page/324/mode/1up">"First report of the Committee for the Selection and Nomenclature of Dynamical and Electrical Units,"</a> <i>Report of the 43rd Meeting of the British Association for the Advancement of Science</i> (Bradford, September 1873), pp. 222-225. From p. 223: "The "ohm," as represented by the original standard coil, is approximately 10⁹ C.G.S. units of resistance ; the "volt" is approximately 10<sup>8</sup> C.G.S. units of electromotive force ; and the "farad" is approximately 1/10⁹ of the C.G.S. unit of capacity."</span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text">(Anon.) (September 24, 1881) <a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/pt?id=nyp.33433090837489;view=1up;seq=309">"The Electrical Congress,"</a> <i>The Electrician</i>, <b>7</b> : 297.</span> </li> <li id="cite_note-Hamer-7"><span class="mw-cite-backlink"><a href="#cite_ref-Hamer_7-0">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFHamer1965"><span style="font-variant: small-caps;">Hamer</span>, Walter J. <a rel="nofollow" class="external text" href="https://www.nist.gov/calibrations/upload/mn84.pdf"><i>Standard Cells: Their Construction, Maintenance, and Characteristics</i></a>.  US National Bureau of Standards, 15 gener 1965.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Standard+Cells%3A+Their+Construction%2C+Maintenance%2C+and+Characteristics&rft.aulast=Hamer&rft.aufirst=Walter+J.&rft.date=15+gener+1965&rft.pub=US+National+Bureau+of+Standards&rft_id=https%3A%2F%2Fwww.nist.gov%2Fcalibrations%2Fupload%2Fmn84.pdf"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-BLR47.12-8"><span class="mw-cite-backlink"><a href="#cite_ref-BLR47.12_8-0">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal"> «<a rel="nofollow" class="external text" href="http://www.americanradiohistory.com/Archive-Bell-Laboratories-Record/40s/Bell-Laboratories-Record-1947-12.pdf">Revised Values for Electrical Units</a>». <i>Bell Laboratories Record</i>, XXV, 12, 12-1947, pàg. 441.</span></span> </li> <li id="cite_note-draft-resolution-A-9"><span class="mw-cite-backlink"><a href="#cite_ref-draft-resolution-A_9-0">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://web.archive.org/web/20180429025229/https://www.bipm.org/utils/en/pdf/CGPM/Draft-Resolution-A-EN.pdf">Draft Resolution A "On the revision of the International System of units (SI)" to be submitted to the CGPM at its 26th meeting (2018)</a>». Arxivat de l'<a rel="nofollow" class="external text" href="https://www.bipm.org/utils/en/pdf/CGPM/Draft-Resolution-A-EN.pdf">original</a> el 2018-04-29. [Consulta: 2 novembre 2018].</span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Enllaços_externs"><span id="Enlla.C3.A7os_externs"></span>Enllaços externs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Volt&action=edit&section=18" title="Modifica la secció: Enllaços externs"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://video.google.cat/videoplay?docid=5645396659673218353&q=Physics+for+Future+Presidents+Electricity&total=5&start=0&num=10&so=0&type=search&plindex=0#0h20m30s">Lliçó sobre l'electricitat i el volt</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110520022521/http://video.google.cat/videoplay?docid=5645396659673218353&q=Physics+for+Future+Presidents+Electricity&total=5&start=0&num=10&so=0&type=search&plindex=0#0h20m30s">Arxivat</a> 2011-05-20 a <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. a Google Videos, de Richard A. Muller <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r33711417"><span class="languageicon" title="En anglès">(anglès)</span></li></ul> <div role="navigation" class="navbox" aria-labelledby="Unitats_del_Sistema_Internacional" style="padding:3px"><table class="nowraplinks hlist collapsible collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3" style="background:#b0d1ad;"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><span typeof="mw:File"><a href="/wiki/Plantilla:Unitats_del_SI" title="Plantilla:Unitats del SI"><img alt="Vegeu aquesta plantilla" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/18px-Commons-emblem-notice.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/27px-Commons-emblem-notice.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/36px-Commons-emblem-notice.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span></li></ul></div><div id="Unitats_del_Sistema_Internacional" style="font-size:114%;margin:0 4em"><a href="/wiki/Sistema_Internacional_d%27Unitats" title="Sistema Internacional d'Unitats">Unitats del Sistema Internacional</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad"><a href="/wiki/Unitat_b%C3%A0sica_del_SI" class="mw-redirect" title="Unitat bàsica del SI">Unitats bàsiques</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Ampere" title="Ampere">Ampere</a></li> <li><a href="/wiki/Candela" title="Candela">Candela</a></li> <li><a href="/wiki/Kelvin" title="Kelvin">Kelvin</a></li> <li><a href="/wiki/Metre" title="Metre">Metre</a></li> <li><a href="/wiki/Mol" title="Mol">Mol</a></li> <li><a href="/wiki/Quilogram" title="Quilogram">Quilogram</a></li> <li><a href="/wiki/Segon" title="Segon">Segon</a></li></ul> </div></td><td class="navbox-image" rowspan="4" style="width:1px;padding:0px 0px 0px 2px"><div><span typeof="mw:File"><a href="/wiki/Fitxer:SI_base_unit.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/75px-SI_base_unit.svg.png" decoding="async" width="75" height="75" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/113px-SI_base_unit.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/SI_base_unit.svg/150px-SI_base_unit.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad"><a href="/wiki/Unitat_derivada_del_SI" class="mw-redirect" title="Unitat derivada del SI">Unitats derivades</a></th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Becquerel_(unitat)" title="Becquerel (unitat)">Becquerel</a></li> <li><a href="/wiki/Coulomb" title="Coulomb">Coulomb</a></li> <li><a href="/wiki/Grau_Celsius" title="Grau Celsius">Grau Celsius</a></li> <li><a href="/wiki/Estereoradian" title="Estereoradian">Estereoradian</a></li> <li><a href="/wiki/Farad" title="Farad">Farad</a></li> <li><a href="/wiki/Gray_(unitat)" title="Gray (unitat)">Gray</a></li> <li><a href="/wiki/Henry_(unitat)" title="Henry (unitat)">Henry</a></li> <li><a href="/wiki/Hertz" title="Hertz">Hertz</a></li> <li><a href="/wiki/Joule" title="Joule">Joule</a></li> <li><a href="/wiki/Katal" title="Katal">Katal</a></li> <li><a href="/wiki/Lumen" title="Lumen">Lumen</a></li> <li><a href="/wiki/Lux" title="Lux">Lux</a></li> <li><a href="/wiki/Newton_(unitat)" title="Newton (unitat)">Newton</a></li> <li><a href="/wiki/Ohm_(unitat)" title="Ohm (unitat)">Ohm</a></li> <li><a href="/wiki/Pascal_(unitat)" title="Pascal (unitat)">Pascal</a></li> <li><a href="/wiki/Radian" title="Radian">Radian</a></li> <li><a href="/wiki/Siemens_(unitat)" title="Siemens (unitat)">Siemens</a></li> <li><a href="/wiki/Sievert" title="Sievert">Sievert</a></li> <li><a href="/wiki/Tesla_(unitat)" title="Tesla (unitat)">Tesla</a></li> <li><a class="mw-selflink selflink">Volt</a></li> <li><a href="/wiki/Watt" title="Watt">Watt</a></li> <li><a href="/wiki/Weber_(unitat)" title="Weber (unitat)">Weber</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad"><a href="/wiki/Unitats_que_no_formen_part_del_SI_per%C3%B2_s%27hi_mencionen" title="Unitats que no formen part del SI però s'hi mencionen">Unitats <br />acceptades</a></th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Unitat_de_massa_at%C3%B2mica" title="Unitat de massa atòmica">Unitat de massa atòmica</a></li> <li><a href="/wiki/Unitat_astron%C3%B2mica" title="Unitat astronòmica">Unitat astronòmica</a></li> <li><a href="/wiki/Dia" title="Dia">Dia</a></li> <li><a href="/wiki/Decibel" title="Decibel">Decibel</a></li> <li><a href="/wiki/Grau_Celsius" title="Grau Celsius">Grau Celsius</a></li> <li><a href="/wiki/Grau_sexagesimal" title="Grau sexagesimal">Grau sexagesimal</a></li> <li><a href="/wiki/Electr%C3%B3-volt" title="Electró-volt">Electró-volt</a></li> <li><a href="/wiki/Hect%C3%A0rea" title="Hectàrea">Hectàrea</a></li> <li><a href="/wiki/Hora" title="Hora">Hora</a></li> <li><a href="/wiki/Litre" title="Litre">Litre</a></li> <li><a href="/wiki/Minut" title="Minut">Minut</a></li> <li><a href="/wiki/Minut_d%27arc" title="Minut d'arc">Minut d'arc</a></li> <li><a href="/wiki/Neper" title="Neper">Neper</a></li> <li><a href="/wiki/Segon_d%27arc" class="mw-redirect" title="Segon d'arc">Segon d'arc</a></li> <li><a href="/wiki/Tona_(unitat)" title="Tona (unitat)">Tona</a> <br /> <a href="/wiki/Unitat_at%C3%B2mica" title="Unitat atòmica">Unitats atòmiques</a></li> <li><a href="/wiki/Unitat_natural" title="Unitat natural">Unitats naturals</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background:#b0d1ad">Vegeu també</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/Prefixos_del_SI" class="mw-redirect" title="Prefixos del SI">Prefixos del SI</a></li> <li><a href="/wiki/Sistema_d%27unitats" title="Sistema d'unitats">Sistemes d'unitats</a></li> <li><a href="/wiki/Conversi%C3%B3_d%27unitats" title="Conversió d'unitats">Conversió d'unitats</a></li> 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