{"id":80774,"date":"2024-01-14T13:18:31","date_gmt":"2024-01-14T13:18:31","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/resistencia-e-resistor-em-analogia-hidraulica\/"},"modified":"2024-01-20T10:03:41","modified_gmt":"2024-01-20T10:03:41","slug":"resistencia-e-resistor-em-analogia-hidraulica","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/resistencia-e-resistor-em-analogia-hidraulica\/","title":{"rendered":"Resist\u00eancia e Resistor em Analogia Hidr\u00e1ulica"},"content":{"rendered":"<h2>Resist\u00eancia e Resistor na Analogia Hidr\u00e1ulica<\/h2>\n<p>A resist\u00eancia \u00e9 a propriedade de um material ou componente que se op\u00f5e ao fluxo de corrente el\u00e9trica atrav\u00e9s dele. \u00c9 medida em Ohms e denotada pelo s\u00edmbolo &#8220;\u03a9&#8221;. A resist\u00eancia surge devido \u00e0s intera\u00e7\u00f5es entre el\u00e9trons e os \u00e1tomos ou mol\u00e9culas que comp\u00f5em o material. Quando uma corrente el\u00e9trica flui atrav\u00e9s de um material, os el\u00e9trons colidem com esses \u00e1tomos ou mol\u00e9culas, fazendo com que os el\u00e9trons percam energia e reduzindo o fluxo de corrente. A resist\u00eancia de um material depende de v\u00e1rios fatores, incluindo seu comprimento, \u00e1rea de se\u00e7\u00e3o transversal e a resistividade do material, que \u00e9 uma medida de qu\u00e3o fortemente o material se op\u00f5e ao fluxo de corrente. Alguns materiais, como metais, t\u00eam baixa resist\u00eancia e s\u00e3o bons condutores de eletricidade, enquanto outros materiais, como borracha ou vidro, t\u00eam alta resist\u00eancia e s\u00e3o isolantes.<\/p>\n<h2>Analogia Hidr\u00e1ulica da Resist\u00eancia<\/h2>\n<p>A analogia hidr\u00e1ulica, ou analogia el\u00e9trico-fluido, \u00e9 uma analogia amplamente utilizada entre hidr\u00e1ulica e eletricidade, que \u00e9 uma ferramenta \u00fatil para ensino e para aqueles que t\u00eam dificuldade em entender como os circuitos funcionam. Pode tamb\u00e9m ser aplicada a problemas de transfer\u00eancia de calor. Como a corrente el\u00e9trica \u00e9 invis\u00edvel e os processos em jogo na eletr\u00f4nica s\u00e3o frequentemente dif\u00edceis de demonstrar, os v\u00e1rios componentes eletr\u00f4nicos s\u00e3o representados por equivalentes hidr\u00e1ulicos.<\/p>\n<p>A rela\u00e7\u00e3o entre tens\u00e3o e corrente \u00e9 definida (em dispositivos \u00f4hmicos como resistores) pela Lei de Ohm. A Lei de Ohm \u00e9 an\u00e1loga \u00e0 equa\u00e7\u00e3o de Hagen\u2013Poiseuille, pois ambas s\u00e3o modelos lineares relacionando fluxo e potencial em seus respectivos sistemas. A eletricidade (assim como o calor) foi originalmente entendida como um tipo de fluido, e os nomes de certas quantidades el\u00e9tricas (como corrente) s\u00e3o derivados de equivalentes hidr\u00e1ulicos. A tens\u00e3o \u00e9 como a diferen\u00e7a de press\u00e3o que empurra a \u00e1gua atrav\u00e9s da mangueira. \u00c9 medida em volts (V).<\/p>\n<p>Esta analogia pressup\u00f5e que a \u00e1gua flua horizontalmente para que a for\u00e7a da gravidade possa ser ignorada. A corrente \u00e9 equivalente a uma taxa de fluxo volum\u00e9trico hidr\u00e1ulico; ou seja, a quantidade volum\u00e9trica de \u00e1gua fluindo ao longo do tempo. Geralmente medida em amperes. Quanto mais larga for a tubula\u00e7\u00e3o, mais \u00e1gua fluir\u00e1 atrav\u00e9s dela. \u00c9 medida em amperes (I ou A).<\/p>\n<p>A resist\u00eancia \u00e9 como o di\u00e2metro da tubula\u00e7\u00e3o ou obst\u00e1culos na mangueira que retardam o fluxo de \u00e1gua. \u00c9 medida em ohms (\u03a9). Na hidr\u00e1ulica, a resist\u00eancia est\u00e1 associada ao coeficiente de perda de press\u00e3o. Os resistores s\u00e3o compar\u00e1veis a uma se\u00e7\u00e3o da rede de tubula\u00e7\u00f5es onde o raio do tubo \u00e9 restringido, restringindo a taxa de fluxo de fluido naquela regi\u00e3o, da mesma forma que um resistor limita a corrente.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/01\/logo.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/resistance-and-resistor-in-hydraulic-analogy\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A resist\u00eancia \u00e9 como o di\u00e2metro do tubo ou obst\u00e1culos na mangueira que retardam o fluxo de \u00e1gua. \u00c9 medido em ohms (\u03a9). Na hidr\u00e1ulica, a resist\u00eancia est\u00e1 associada ao coeficiente de perda de press\u00e3o.<\/p>\n","protected":false},"author":1,"featured_media":1581,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80774","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":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Resist\u00eancia e Resistor em Analogia Hidr\u00e1ulica<\/title>\n<meta name=\"description\" content=\"A resist\u00eancia \u00e9 como o di\u00e2metro do tubo ou obst\u00e1culos na mangueira que retardam o fluxo de \u00e1gua. \u00c9 medido em ohms (\u03a9). 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