{"id":80433,"date":"2024-01-14T13:04:33","date_gmt":"2024-01-14T13:04:33","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/constante-de-coulomb-formula-e-valor\/"},"modified":"2024-01-20T09:46:57","modified_gmt":"2024-01-20T09:46:57","slug":"constante-de-coulomb-formula-e-valor","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/constante-de-coulomb-formula-e-valor\/","title":{"rendered":"Constante de Coulomb | F\u00f3rmula e Valor"},"content":{"rendered":"

Constante de Coulomb<\/h2>\n

Lei de Coulomb<\/h2>\n

A constante de Coulomb, tamb\u00e9m conhecida como constante eletrost\u00e1tica, (denotada por ke, k ou K) \u00e9 uma constante de proporcionalidade na Lei de Coulomb. Esta lei, um princ\u00edpio fundamental da f\u00edsica, descreve as for\u00e7as el\u00e9tricas que atuam entre part\u00edculas eletricamente carregadas. A Lei de Coulomb tem v\u00e1rias aplica\u00e7\u00f5es pr\u00e1ticas no dia a dia, desde m\u00e1quinas Xerox, impressoras a laser, purificadores de ar eletrost\u00e1ticos at\u00e9 a pintura a p\u00f3.<\/p>\n

Valor da Constante de Coulomb<\/h2>\n

O valor da constante de proporcionalidade na Lei de Coulomb varia conforme o sistema de unidades utilizado. No estudo da eletricidade e magnetismo, as unidades SI s\u00e3o utilizadas exclusivamente. As unidades el\u00e9tricas SI incluem a maioria das unidades familiares, como o volt, o amp\u00e8re, o ohm e o watt. (N\u00e3o existe um sistema brit\u00e2nico de unidades el\u00e9tricas.) A unidade SI de carga el\u00e9trica \u00e9 chamada de um coulomb (1C). A constante de Coulomb \u00e9 usada em muitas equa\u00e7\u00f5es el\u00e9tricas, embora \u00e0s vezes seja expressa como o seguinte produto da constante de permissividade do v\u00e1cuo:<\/p>\n

Formula\u00e7\u00e3o da Lei de Coulomb<\/h2>\n

Doravante, a Lei de Coulomb ser\u00e1 frequentemente escrita como:<\/p>\n

Perguntas Frequentes<\/h2>\n

Qual \u00e9 a principal aplica\u00e7\u00e3o da Lei de Coulomb?<\/b>
\nA Lei de Coulomb pode ser usada para calcular a for\u00e7a entre part\u00edculas carregadas (por exemplo, dois pr\u00f3tons) ou entre dois objetos carregados. A magnitude da for\u00e7a el\u00e9trica F \u00e9 diretamente proporcional \u00e0 quantidade de uma carga el\u00e9trica, q1<\/sub>, multiplicada pela outra, q2<\/sub>, e inversamente proporcional ao quadrado da dist\u00e2ncia entre as part\u00edculas.<\/p>\n

Pr\u00f3ximo Artigo<\/h2>\n

\"\"<\/p>\n

\n Original Article<\/a>\n<\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

A constante de Coulomb, ou constante eletrost\u00e1tica, (denotada ke, k ou K) \u00e9 uma constante de proporcionalidade na Lei de Coulomb. A constante de Coulomb \u00e9 ke \u2248 8,987xE9 N\u22c5m2\u22c5C\u22122.<\/p>\n","protected":false},"author":1,"featured_media":2043,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80433","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nao-categorizado","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"\nConstante de Coulomb | F\u00f3rmula e Valor<\/title>\n<meta name=\"description\" content=\"A constante de Coulomb, ou constante eletrost\u00e1tica, (denotada ke, k ou K) \u00e9 uma constante de proporcionalidade na Lei de Coulomb. 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