{"id":80465,"date":"2024-01-14T13:05:41","date_gmt":"2024-01-14T13:05:41","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/voltimetro-de-ferro-movel-descricao-e-caracteristicas\/"},"modified":"2024-01-20T09:48:37","modified_gmt":"2024-01-20T09:48:37","slug":"voltimetro-de-ferro-movel-descricao-e-caracteristicas","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/voltimetro-de-ferro-movel-descricao-e-caracteristicas\/","title":{"rendered":"Volt\u00edmetro de ferro m\u00f3vel | Descri\u00e7\u00e3o e caracter\u00edsticas |"},"content":{"rendered":"<h2>Volt\u00edmetro de Ferro M\u00f3vel<\/h2>\n<p>Os volt\u00edmetros de ferro m\u00f3vel s\u00e3o amplamente utilizados para a medi\u00e7\u00e3o de tens\u00f5es e correntes alternadas. Nestes instrumentos, o sistema m\u00f3vel \u00e9 composto por uma ou mais pe\u00e7as de ferro macio, especialmente moldadas e articuladas para serem influenciadas pelo campo magn\u00e9tico produzido pela corrente na bobina. Quando a corrente flui atrav\u00e9s da bobina, um campo magn\u00e9tico \u00e9 gerado, fazendo com que o ferro m\u00f3vel se desloque do campo mais fraco, fora da bobina, para o campo mais forte, dentro dela. Em outras palavras, o ferro m\u00f3vel \u00e9 atra\u00eddo para dentro da bobina.<\/p>\n<p>A for\u00e7a controladora \u00e9 fornecida por molas, mas o controle por gravidade pode ser utilizado em tipos de instrumentos montados verticalmente em pain\u00e9is. Existem dois tipos de volt\u00edmetros de ferro m\u00f3vel: os de atra\u00e7\u00e3o e os de repuls\u00e3o.<\/p>\n<h2>Outros Tipos de Volt\u00edmetros<\/h2>\n<p>Al\u00e9m do volt\u00edmetro de ferro m\u00f3vel, existem diversos outros tipos de volt\u00edmetros, como:<\/p>\n<ul>\n<li>Volt\u00edmetro de Bobina M\u00f3vel e \u00cdm\u00e3 Permanente (PMMCV)<\/li>\n<li>Volt\u00edmetro Digital (DVM)<\/li>\n<li>Electrodinam\u00f4metro<\/li>\n<li>Volt\u00edmetro de Tipo Retificador<\/li>\n<li>Volt\u00edmetro de Tipo Indu\u00e7\u00e3o<\/li>\n<li>Volt\u00edmetro Eletrost\u00e1tico<\/li>\n<\/ul>\n<h2>Simbologia do Volt\u00edmetro<\/h2>\n<p>Em diagramas de circuito, o volt\u00edmetro \u00e9 representado pela letra V dentro de um c\u00edrculo, com duas linhas emergindo para representar os dois pontos de medi\u00e7\u00e3o.<\/p>\n<h2>Caracter\u00edsticas do Volt\u00edmetro de Ferro M\u00f3vel<\/h2>\n<p>Este tipo de volt\u00edmetro \u00e9 caracterizado pela sua capacidade de medir tens\u00f5es alternadas, gra\u00e7as \u00e0 sua constru\u00e7\u00e3o que permite que o ferro m\u00f3vel seja atra\u00eddo pelo campo magn\u00e9tico da bobina.<\/p>\n<h2>Analogia Hidr\u00e1ulica do Volt\u00edmetro<\/h2>\n<p>A analogia hidr\u00e1ulica \u00e9 uma ferramenta \u00fatil para o ensino e compreens\u00e3o dos circuitos el\u00e9tricos, comparando componentes el\u00e9tricos com seus equivalentes hidr\u00e1ulicos. A rela\u00e7\u00e3o entre tens\u00e3o e corrente, definida pela Lei de Ohm, \u00e9 semelhante \u00e0 equa\u00e7\u00e3o de Hagen-Poiseuille, ambas modelos lineares relacionando fluxo e potencial em seus respectivos sistemas.<\/p>\n<p>Historicamente, a eletricidade era entendida como um tipo de fluido, e os nomes de algumas quantidades el\u00e9tricas, como a corrente, s\u00e3o derivados de equivalentes hidr\u00e1ulicos. Assim, a tens\u00e3o el\u00e9trica \u00e9 an\u00e1loga \u00e0 diferen\u00e7a de press\u00e3o que impulsiona a \u00e1gua atrav\u00e9s de uma mangueira, medida em volts (V). Este modelo pressup\u00f5e que a \u00e1gua flua horizontalmente, ignorando a for\u00e7a da gravidade, tornando o volt\u00edmetro equivalente \u00e0 medi\u00e7\u00e3o de diferen\u00e7a de press\u00e3o.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/07\/moving-iron-voltmeter-example.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/voltmeter\/moving-iron-voltmeter\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nos instrumentos de ferro m\u00f3vel, o sistema m\u00f3vel consiste em uma ou mais pe\u00e7as de ferro macio de formato especial, que s\u00e3o articuladas de modo a serem influenciadas pela corrente produzida na bobina.<\/p>\n","protected":false},"author":1,"featured_media":2901,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80465","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 - 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