{"id":263,"date":"2023-06-23T01:49:39","date_gmt":"2023-06-23T01:49:39","guid":{"rendered":"https:\/\/physigeek.com\/pt\/volt\/"},"modified":"2023-06-23T01:49:39","modified_gmt":"2023-06-23T01:49:39","slug":"volt","status":"publish","type":"post","link":"https:\/\/physigeek.com\/pt\/volt\/","title":{"rendered":"Volt"},"content":{"rendered":"<p>Este artigo explica o que s\u00e3o volts. Assim, voc\u00ea descobrir\u00e1 o que significa um volt na f\u00edsica, exemplos de sua ordem de grandeza e as diferen\u00e7as em rela\u00e7\u00e3o a outras unidades el\u00e9tricas. Al\u00e9m disso, voc\u00ea pode converter entre m\u00faltiplos e subm\u00faltiplos do volt com uma calculadora online.<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-un-voltio\"><\/span> O que \u00e9 um volt?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> O <strong>volt<\/strong> , tamb\u00e9m chamado de <strong>volt<\/strong> , \u00e9 a unidade do sistema internacional usada para medir tens\u00e3o el\u00e9trica, potencial el\u00e9trico e for\u00e7a eletromotriz.<\/p>\n<p> O s\u00edmbolo de volt \u00e9 a letra mai\u00fascula V. Por exemplo, para expressar uma diferen\u00e7a de potencial de cinco volts, \u00e9 abreviado como 5 V.<\/p>\n<p> O nome volt foi dado a esta medida el\u00e9trica em homenagem ao f\u00edsico italiano Alessandro Volta, que inventou a c\u00e9lula voltaica em 1800.<\/p>\n<p> Na f\u00edsica, o volt \u00e9 formalmente definido como a diferen\u00e7a de potencial el\u00e9trico entre dois pontos de um cabo condutor atrav\u00e9s do qual flui uma corrente de um ampere e consome um watt de energia el\u00e9trica. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplos-del-orden-de-magnitud-del-voltio\"><\/span> Exemplos da ordem de grandeza do volt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Dada a defini\u00e7\u00e3o de volt, abaixo est\u00e3o v\u00e1rios exemplos da ordem de grandeza de um volt. Assim voc\u00ea pode ter uma ideia do valor de um volt.<\/p>\n<ul style=\"color:#4fd12f; font-weight: bold;\">\n<li style=\"margin-bottom:14px\"> <span style=\"color:#101010;font-weight: normal;\">O potencial de a\u00e7\u00e3o de um neur\u00f4nio \u00e9 de aproximadamente 0,075 V.<\/span><\/li>\n<li style=\"margin-bottom:14px\"> <span style=\"color:#101010;font-weight: normal;\">Uma bateria de c\u00e9lula \u00fanica tem cerca de 1,2V.<\/span><\/li>\n<li style=\"margin-bottom:14px\"> <span style=\"color:#101010;font-weight: normal;\">O sistema el\u00e9trico de um carro normalmente funciona com 12V.<\/span><\/li>\n<li style=\"margin-bottom:14px\"> <span style=\"color:#101010;font-weight: normal;\">Na maioria dos pa\u00edses da Am\u00e9rica do Sul, a tens\u00e3o el\u00e9trica de 220 V \u00e9 usada para resid\u00eancias, enquanto na Europa \u00e9 usada 230 V.<\/span><\/li>\n<li style=\"margin-bottom:14px\"> <span style=\"color:#101010;font-weight: normal;\">Uma rede de transmiss\u00e3o de eletricidade de alta tens\u00e3o opera com 110.000 V ou mais.<\/span><\/li>\n<li style=\"margin-bottom:14px\"> <span style=\"color:#101010;font-weight: normal;\">A tens\u00e3o do raio \u00e9 <sup>de 10,8<\/sup> V (100 MV).<\/span> <\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Voltio-amperio-ohmio-y-vatio\"><\/span> Volt, amplificador, ohm e watt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> A seguir veremos quais s\u00e3o as diferen\u00e7as entre volts, amperes, ohms e watts, j\u00e1 que s\u00e3o quatro unidades el\u00e9tricas amplamente utilizadas e \u00e0s vezes confundidas.<\/p>\n<ul style=\"color:#4fd12f; font-weight: bold;\">\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Volt (V)<\/strong> : unidade utilizada para medir a diferen\u00e7a de potencial entre dois pontos de um circuito el\u00e9trico.<\/span><\/li>\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Ampere (A)<\/strong> : unidade usada para medir a intensidade de uma corrente el\u00e9trica.<\/span><\/li>\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Ohm (\u03a9)<\/strong> : unidade utilizada para quantificar o valor da resist\u00eancia el\u00e9trica.<\/span><\/li>\n<li style=\"margin-bottom:18px\"> <span style=\"color:#101010;font-weight: normal;\"><strong>Watt (W)<\/strong> : unidade utilizada para expressar valores de pot\u00eancia el\u00e9trica.<\/span><\/li>\n<\/ul>\n<p> Portanto, cada uma dessas unidades tem uma finalidade diferente, j\u00e1 que cada uma \u00e9 utilizada para medir uma caracter\u00edstica diferente de um circuito el\u00e9trico.<\/p>\n<p> Todas essas unidades el\u00e9tricas est\u00e3o matematicamente interligadas. Assim, a diferen\u00e7a de tens\u00e3o entre dois pontos pode ser calculada a partir da corrente el\u00e9trica que flui no cabo e da resist\u00eancia entre esses pontos usando <strong>a lei de Ohm<\/strong> :<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-111a7f4c15724160f04805b178454613_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" V=I\\cdot R\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"74\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Portanto, o volt tamb\u00e9m pode ser definido como o produto entre a intensidade da corrente que flui no cabo e sua resist\u00eancia el\u00e9trica:<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-7e36769872ca2dc1131141a3bb955a3e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\" 1 \\ V=1 \\ A\\cdot 1 \\ \\Omega\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"119\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> Por outro lado, a pot\u00eancia de um circuito el\u00e9trico \u00e9 igual \u00e0 intensidade da corrente el\u00e9trica multiplicada pela sua diferen\u00e7a de potencial. Portanto, um watt \u00e9 igual a um amp\u00e8re vezes um volt. <\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-594b1999da7d62842e8b56699d2b32e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"P = V\\cdot I \\quad \\color{orange}\\bm{\\longrightarrow}\\color{black}\\quad 1 \\ W = 1 \\ V \\cdot 1 \\ A\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"360\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multiplos-y-submultiplos-del-voltio\"><\/span> M\u00faltiplos e subm\u00faltiplos de volt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Para nos aprofundarmos um pouco mais no conceito el\u00e9trico de volt, nesta se\u00e7\u00e3o veremos quais s\u00e3o os m\u00faltiplos e subm\u00faltiplos do volt, bem como suas equival\u00eancias.<\/p>\n<p> Os <strong>m\u00faltiplos do volt<\/strong> s\u00e3o os seguintes:<\/p>\n<figure class=\"wp-block-table is-style-stripes\">\n<table>\n<thead>\n<tr>\n<th> nome<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> S\u00edmbolo<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Diversos<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> decavolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> daV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>1 V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> excluindo impostos<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> H v<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>2 V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> quilovolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> kV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>3V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> megavolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> VM<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>6V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> gigavolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> GV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>9V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> teravolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> televis\u00e3o<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>12V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> petavolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> VP<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>15V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> exavolte<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> VE<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>18V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> zetavolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> ZV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>21 V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> iotavolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> E V<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10 <sup>24 V<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p> Por outro lado, os <strong>subm\u00faltiplos do volt<\/strong> s\u00e3o os seguintes:<\/p>\n<figure class=\"wp-block-table is-style-stripes\">\n<table>\n<thead>\n<tr>\n<th> nome<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> S\u00edmbolo<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> subm\u00faltiplo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> decivolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> dV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-1V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> centvolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> resumo<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-2V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> milivolts<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> mV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-3V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> microvolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> \u03bcV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-6V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> nanovolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> N. V.<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-9V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> VP<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> VP<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-12V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> femtovolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> fV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-15V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> attovolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> um V<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-18V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> zeptovolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> zV<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-21V<\/sup><\/td>\n<\/tr>\n<tr>\n<td> octovolt<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> e V<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <sup>10-24 V<\/sup> <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Calculadora-para-convertir-voltios-a-otras-unidades\"><\/span> Calculadora para converter volts em outras unidades<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Voc\u00ea pode usar o seguinte conversor para converter entre m\u00faltiplos e subm\u00faltiplos de volts.<\/p>\n<p> Basta inserir o valor do potencial el\u00e9trico, unidades de convers\u00e3o e pressionar o bot\u00e3o \u201cConverter\u201d. Voc\u00ea deve usar o ponto final como separador decimal, por exemplo 14.08. <\/p>\n<form action=\"\" method=\"post\">\n<div align=\"center\" style=\"line-height:50px; background:#FEF9E7; padding:15px; border:2px solid #4FD12F; border-radius:15px; margin-bottom:20px\"><input name=\"datos\" style=\"border:1.5px solid #4FD12F; border-radius:5px;  padding:7px; color:#000000; width: 100px\" placeholder=\"1\" required=\"\" oninvalid=\"this.setCustomValidity('Introduce el valor del voltaje aqu\u00ed')\" oninput=\"this.setCustomValidity('')\"><select name=\"unidad1\" style=\"border:1.5px solid #4FD12F; border-radius:5px;  padding:7px; color:#000000; width: 130px\"><option value=\"1unidad21\"> Yottavolt (YV)<\/option><option value=\"1unidad20\"> Zetavolt (ZV)<\/option><option value=\"1unidad19\"> Exavolt (EV)<\/option><option value=\"1unidad18\"> Petavolt (PV)<\/option><option value=\"1unidad17\"> Teravolt (TV)<\/option><option value=\"1unidad16\"> Gigavolt (GV)<\/option><option value=\"1unidad1\"> Megavolt (MV)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"1unidad2\"> Quilovolt (kV)<\/option><option value=\"1unidad3\"> Hectovolt (hV)<\/option><option value=\"1unidad4\"> Decavolt (daA)<\/option><option value=\"1unidad5\" selected=\"selected\"> volts (V)<\/option><option value=\"1unidad6\"> decivolt (dV)<\/option><option value=\"1unidad7\"> Centivolts (cV)<\/option><option value=\"1unidad8\"> Milivolts (mV)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"1unidad9\"> Microvolts (\u00b5V)<\/option><option value=\"1unidad10\"> Nanovolt (nV)<\/option><option value=\"1unidad11\"> PV (pV)<\/option><option value=\"1unidad12\"> Femtovolt (fV)<\/option><option value=\"1unidad13\"> Attovolt (aV)<\/option><option value=\"1unidad14\"> Zeptovolt (zV)<\/option><option value=\"1unidad15\"> Yoctovolt (yV)<\/option><\/select> <span style=\"color:#4FD12F\">\u279c<\/span> <select name=\"unidad2\" style=\"border:1.5px solid #4FD12F; border-radius:5px;  padding:7px; color:#000000; width: 130px\"><option value=\"2unidad21\"> Yottavolt (YV)<\/option><option value=\"2unidad20\"> Zetavolt (ZV)<\/option><option value=\"2unidad19\"> Exavolt (EV)<\/option><option value=\"2unidad18\"> Petavolt (PV)<\/option><option value=\"2unidad17\"> Teravolt (TV)<\/option><option value=\"2unidad16\"> Gigavolt (GV)<\/option><option value=\"2unidad1\"> Megavolt (MV)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"2unidad2\" selected=\"selected\">Quilovolt (kV)<\/option><option value=\"2unidad3\"> Hectovolt (hV)<\/option><option value=\"2unidad4\"> Decavolt (daA)<\/option><option value=\"2unidad5\"> Volts (V)<\/option><option value=\"2unidad6\"> Decivolt (dV)<\/option><option value=\"2unidad7\"> Centivolts (cV)<\/option><option value=\"2unidad8\"> Milivolts (mV)<\/option><option disabled=\"disabled\" value=\"\"><\/option><option value=\"2unidad9\"> Microvolts (\u00b5V)<\/option><option value=\"2unidad10\"> Nanovolt (nV)<\/option><option value=\"2unidad11\"> PV (pV)<\/option><option value=\"2unidad12\"> Femtovolt (fV)<\/option><option value=\"2unidad13\"> Attovolt (aV)<\/option><option value=\"2unidad14\"> Zeptovolt (zV)<\/option><option value=\"2unidad15\"> Yoctovolt (yV) <\/option><\/select><\/p>\n<div style=\"text-align:center\"><input align=\"center\" style=\"font-size:105%; border-radius:30px; margin-top: 20px; margin-bottom:15px\" type=\"submit\" name=\"submit\" value=\"Converter\"><\/div>\n<\/div>\n<\/form>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Voltio-y-electronvoltio\"><\/span> Volt e el\u00e9tron-volt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Por fim, veremos qual a diferen\u00e7a entre um volt e um el\u00e9tron-volt, pois s\u00e3o duas unidades diferentes, mas com nomes semelhantes e, portanto, podem ser confundidas.<\/p>\n<p> Um <strong>el\u00e9tron-volt<\/strong> \u00e9 uma unidade de energia. Mais precisamente, um el\u00e9tron-volt \u00e9 a mudan\u00e7a na energia el\u00e9trica que um el\u00e9tron ganha ao se mover no v\u00e1cuo devido a uma diferen\u00e7a de potencial de 1 volt.<\/p>\n<p> Assim, o el\u00e9tron-volt \u00e9 uma medida usada principalmente na f\u00edsica nuclear para expressar valores de energia. Em particular, um el\u00e9tron-volt \u00e9 equivalente a 1,602176634 \u00b7 10 <sup>\u221219<\/sup> joules (ou joules).<\/p>\n<p> Portanto, <strong>a principal diferen\u00e7a entre um volt e um el\u00e9tron-volt<\/strong> \u00e9 o tipo de unidade. Um volt \u00e9 uma unidade usada para medir o potencial el\u00e9trico, enquanto um el\u00e9tron-volt \u00e9 uma unidade usada para expressar valores de energia.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Este artigo explica o que s\u00e3o volts. Assim, voc\u00ea descobrir\u00e1 o que significa um volt na f\u00edsica, exemplos de sua ordem de grandeza e as diferen\u00e7as em rela\u00e7\u00e3o a outras unidades el\u00e9tricas. Al\u00e9m disso, voc\u00ea pode converter entre m\u00faltiplos e subm\u00faltiplos do volt com uma calculadora online. O que \u00e9 um volt? O volt , &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/pt\/volt\/\"> <span class=\"screen-reader-text\">Volt<\/span> Leia mais &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-263","post","type-post","status-publish","format-standard","hentry","category-unidades"],"yoast_head":"<!-- This site is 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