{"id":363,"date":"2017-07-18T08:00:05","date_gmt":"2017-07-18T11:00:05","guid":{"rendered":"https:\/\/museuweg.net\/blog\/?p=363"},"modified":"2025-07-24T09:12:39","modified_gmt":"2025-07-24T12:12:39","slug":"qual-a-relacao-entre-o-eletromagnetismo-e-a-bussola","status":"publish","type":"post","link":"https:\/\/museuweg.net\/blog\/qual-a-relacao-entre-o-eletromagnetismo-e-a-bussola\/","title":{"rendered":"Qual a rela\u00e7\u00e3o entre o eletromagnetismo e a b\u00fassola?"},"content":{"rendered":"

Voc\u00ea sabia que o nosso planeta \u00e9 como se fosse um grande \u00edm\u00e3? \u00c9 por isso que as b\u00fassolas est\u00e3o alinhadas com o campo magn\u00e9tico da Terra. E tudo isso tem a ver com o eletromagnetismo, tema de hoje do blog.<\/p>\n

O eletromagnetismo \u00e9 um fen\u00f4meno t\u00e3o antigo, mas fundamental para a cria\u00e7\u00e3o de diversos inventos, inclusive da b\u00fassola. At\u00e9 o s\u00e9culo XIX, ele era estudado como se fosse independente dos fen\u00f4menos magn\u00e9ticos.<\/p>\n

Foi a partir de 1820 que cientistas de diversos pa\u00edses passaram a constatar a rela\u00e7\u00e3o entre esses dois campos magn\u00e9ticos. Aos poucos foi formulada a teoria eletromagn\u00e9tica, que unificou as duas \u00e1reas de conhecimento e propiciou o surgimento de novas tecnologias.<\/p>\n

O eletromagnetismo e a b\u00fassola<\/strong><\/p>\n

Afinal, o que \u00e9 eletromagnetismo? Correntes el\u00e9tricas geram campos magn\u00e9ticos, fen\u00f4meno que pode ser observado colocando-se b\u00fassolas pr\u00f3ximas a um circuito el\u00e9trico.<\/p>\n

Elas possuem uma agulha de orienta\u00e7\u00e3o, que est\u00e1 alinhada com o campo magn\u00e9tico da Terra. Mas, o que acontece quando o circuito \u00e9 ligado, fazendo surgir uma corrente? E quando o sentido da corrente \u00e9 invertido?<\/p>\n

Assim que o circuito \u00e9 ligado, a agulha passa a se orientar na dire\u00e7\u00e3o do campo magn\u00e9tico gerado pela corrente. Esse campo apresenta o formato de c\u00edrculos conc\u00eantricos, tendo o fio condutor como eixo.<\/p>\n

\"eletromagnetismo-museu\"<\/a><\/p>\n

 <\/p>\n

Invertendo o sentido da corrente, a orienta\u00e7\u00e3o do campo magn\u00e9tico gerado tamb\u00e9m inverte. Fa\u00e7a um teste, observe o ponteiro do amper\u00edmetro e as agulhas das b\u00fassolas para verificar as altera\u00e7\u00f5es.<\/p>\n

A orienta\u00e7\u00e3o do campo magn\u00e9tico muda com a invers\u00e3o do sentido da corrente. Regra pr\u00e1tica para o sentido do campo: com o ded\u00e3o da m\u00e3o direita apontando no sentido da corrente, o campo magn\u00e9tico gira no sentido de fechamento da m\u00e3o, como se ela fosse pegar o fio.<\/p>\n

Quer saber mais sobre essa rela\u00e7\u00e3o dos fen\u00f4menos? Visite o Museu WEG de Ci\u00eancia e Tecnologia e viva essa experi\u00eancia!<\/p>\n","protected":false},"excerpt":{"rendered":"

Voc\u00ea sabia que o nosso planeta \u00e9 como se fosse um grande \u00edm\u00e3? \u00c9 por isso que as b\u00fassolas est\u00e3o…<\/p>\n","protected":false},"author":4,"featured_media":1862,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,5,4,21],"tags":[55,54,22,13],"class_list":["post-363","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia-2","category-eletromagnetismo","category-weg","category-tecnologia-2","tag-bussola","tag-eletromagnetismo-2","tag-museu-weg","tag-tecnologia"],"yoast_head":"\nQual a rela\u00e7\u00e3o entre o eletromagnetismo e a b\u00fassola? - Blog com Ci\u00eancia<\/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:\/\/museuweg.net\/blog\/qual-a-relacao-entre-o-eletromagnetismo-e-a-bussola\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qual a rela\u00e7\u00e3o entre o eletromagnetismo e a b\u00fassola? 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