{"id":17382,"date":"2024-11-27T16:57:18","date_gmt":"2024-11-27T19:57:18","guid":{"rendered":"https:\/\/hangarmma.com.br\/blog\/?post_type=glossary&p=17382"},"modified":"2024-11-27T16:57:19","modified_gmt":"2024-11-27T19:57:19","slug":"reatancia-capacitativa","status":"publish","type":"glossary","link":"https:\/\/hangarmma.com.br\/blog\/reatancia-capacitativa\/","title":{"rendered":"Reat\u00e2ncia Capacitativa"},"content":{"rendered":"\n Reat\u00e2ncia Capacitiva<\/title>\n<\/head>\n<body>\n <h1>Reat\u00e2ncia Capacitiva<\/h1>\n <p>\n A <strong>reat\u00e2ncia capacitiva<\/strong> (<em>Xc<\/em>) representa a oposi\u00e7\u00e3o que um capacitor oferece ao fluxo de corrente alternada em um circuito, \n sendo medida em ohms. Este conceito \u00e9 similar \u00e0 resist\u00eancia em corrente cont\u00ednua, mas \u00e9 aplic\u00e1vel em corrente alternada devido \u00e0s caracter\u00edsticas vari\u00e1veis da \n capacit\u00e2ncia com a frequ\u00eancia do sinal.\n <\/p>\n <p>A f\u00f3rmula para calcular a reat\u00e2ncia capacitiva \u00e9:<\/p>\n <p>\n <code>X<sub>c<\/sub> = 1 \/ (2\u03c0fC)<\/code>\n <\/p>\n <ul>\n <li><strong>f<\/strong>: frequ\u00eancia em hertz (Hz),<\/li>\n <li><strong>C<\/strong>: capacit\u00e2ncia em farads (F),<\/li>\n <li><strong>\u03c0<\/strong>: constante matem\u00e1tica (~3,1416).<\/li>\n <\/ul>\n\n <h2>Propriedades da Reat\u00e2ncia Capacitiva<\/h2>\n <ul>\n <li><strong>Inversamente proporcional \u00e0 frequ\u00eancia:<\/strong> Quanto maior a frequ\u00eancia da corrente alternada, menor ser\u00e1 a reat\u00e2ncia capacitiva. \n Isso significa que capacitores apresentam menor oposi\u00e7\u00e3o \u00e0 corrente em frequ\u00eancias mais altas.<\/li>\n <li><strong>Inversamente proporcional \u00e0 capacit\u00e2ncia:<\/strong> Capacitores com maior valor de capacit\u00e2ncia oferecem menor reat\u00e2ncia.<\/li>\n <\/ul>\n\n <h2>Exemplo de Aplica\u00e7\u00e3o<\/h2>\n <p>Considere um circuito em s\u00e9rie com:<\/p>\n <ul>\n <li><strong>Tens\u00e3o (E):<\/strong> 110 volts,<\/li>\n <li><strong>Frequ\u00eancia (f):<\/strong> 60 Hz,<\/li>\n <li><strong>Capacit\u00e2ncia (C):<\/strong> 80 \u00b5F.<\/li>\n <\/ul>\n <ol>\n <li>\n <p>Converta a capacit\u00e2ncia para farads:<\/p>\n <p><code>C = 80 \u00b5F = 80 \u00d7 10<sup>-6<\/sup> F = 0,000080 F<\/code><\/p>\n <\/li>\n <li>\n <p>Calcule a reat\u00e2ncia capacitiva usando a f\u00f3rmula:<\/p>\n <p><code>X<sub>c<\/sub> = 1 \/ (2\u03c0fC) = 1 \/ (2 \u00d7 3,1416 \u00d7 60 \u00d7 0,000080)<\/code><\/p>\n <p><code>X<sub>c<\/sub> = 1 \/ 0,0302 \u2248 33,2 \u03a9<\/code><\/p>\n <\/li>\n <li>\n <p>Encontre a corrente (<em>I<\/em>) usando a rela\u00e7\u00e3o <code>I = E \/ X<sub>c<\/sub><\/code>:<\/p>\n <p><code>I = 110 \/ 33,2 \u2248 3,31 A<\/code><\/p>\n <\/li>\n <\/ol>\n <p>\n Neste exemplo, o capacitor reduz a corrente a um valor controlado, sendo essencial para o funcionamento eficiente de circuitos eletr\u00f4nicos.\n <\/p>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>Reat\u00e2ncia Capacitiva Reat\u00e2ncia Capacitiva A reat\u00e2ncia capacitiva (Xc) representa a oposi\u00e7\u00e3o que um capacitor oferece ao fluxo de corrente alternada em um circuito, sendo medida em ohms. Este conceito \u00e9 similar \u00e0 resist\u00eancia em corrente cont\u00ednua, mas \u00e9 aplic\u00e1vel em corrente alternada devido \u00e0s caracter\u00edsticas vari\u00e1veis da capacit\u00e2ncia com a frequ\u00eancia do sinal. A f\u00f3rmula […]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","class_list":["post-17382","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Reat\u00e2ncia Capacitativa - HANGAR MMA<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hangarmma.com.br\/blog\/reatancia-capacitativa\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reat\u00e2ncia Capacitativa - HANGAR MMA\" \/>\n<meta property=\"og:description\" content=\"Reat\u00e2ncia Capacitiva Reat\u00e2ncia Capacitiva A reat\u00e2ncia capacitiva (Xc) representa a oposi\u00e7\u00e3o que um capacitor oferece ao fluxo de corrente alternada em um circuito, sendo medida em ohms. Este conceito \u00e9 similar \u00e0 resist\u00eancia em corrente cont\u00ednua, mas \u00e9 aplic\u00e1vel em corrente alternada devido \u00e0s caracter\u00edsticas vari\u00e1veis da capacit\u00e2ncia com a frequ\u00eancia do sinal. 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