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Lei de Kirchhoff
Teoria Completa Exercícios Resolvidos Passo a Passo
Introdução à Eletricidade
Veja Mais
Leis de Ohm
Lei de Kirchhoff
Fontes de Tensão e de Corrente e
Instrumentos de Medição
Associação de resistores
Divisor de Tensão e Corrente
Potência
Lista de Exercícios de Lei de
Kirchhoff
Teoria Completa
Fala pessoal, agora vamos ver nessa aula um assunto que deve dar medo nas
pessoas só pelo nome estranho.
Vocês já se perguntaram o que acontece com a corrente e a tensão quando
conectamos uma resistência a mais em um circuito?
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Esse circuito não pode ser resolvido apenas com o que já sabemos, mas vou
te mostrar outras ferramentas...
Nós e Ramos
Antes de explicar certinho a lei de Kirchho�, precisamos ter fresco na nossa
cabeça o conhecimento do que são nós e ramos em um circuito.
Os ramos podem ser entendidos como quaisquer elementos entre dois
terminais, como por exemplo:
EXPANDIR
A corrente na �gura é:
Exercício Resolvido #1
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Resposta
A corrente no circuito da �gura é:
Exercício Resolvido #2
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Resposta
Determine , e no circuito da �gura.
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Exercício Resolvido #3
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Exercício Resolvido #4
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Determine e no circuito da �gura abaixo:
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No circuito abaixo, determine e .
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Passo 1
Exercício Resolvido #5
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No circuito abaixo, calcule , e .
Exercício Resolvido #6
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Passo 3
Resposta
Para o circuito da �gura, use a LKC para encontrar as
correntes nos ramos a .
Exercício Resolvido #7
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Boylestad – 12 ed. – Capítulo 6 - Exercício 24
Usando a Lei de Kirchho� para corrente, determine as
correntes desconhecidas para o circuito em paralelo na
�gura:
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Boylestad – 12 ed. – Capítulo 6 - Exercício 25
Usando a Lei de Kirchho� para corrente, determine as
correntes desconhecidas para as con�gurações complexas na
�gura:
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Exercício Resolvido #9
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Boylestad – 12 ed. – Capítulo 5 - Exercício 21 - Adaptada
Usando a Lei de Kirchho� para tensões, descubra as tensões
desconhecidas para o circuito:
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Exercício Resolvido #10
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Questões de Livros Relacionadas
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Determine i 0 no
circuito da �gura
2.8 .
Determine v e i x ,
no circuito da
�gura 2.79 .
Para o circuito da
�gura 2.88 ,
determine V 0 / V s
em termos de α ,
Determine I e V a b
no circuito da
�gura 2.82 .
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