LE307. Introdução a Eletrodinâmica
Autor: Professor Marcos Faria dos Santos | Publicado: 2017-02-19T07:33:00-08:00

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LE307. Introdução a Eletrodinâmica


Exercícios de
Fixação




1)
Conceitue corrente elétrica.

2)
Quais são os tipos de corrente?

3)
Descreva os efeitos da corrente:

4)
&nbsp;Qual o&nbsp; sentido da corrente utilizado em nossos estudos? E qual a 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; importância do sentido real?

5)
A partida de um automóvel é acionada durante 5 s, e nesse intervalo de 

&nbsp;&nbsp;&nbsp; tempo a corrente que circula pela bateria
tem intensidade 200 A .Quanto 

&nbsp;&nbsp;&nbsp; tempo a bateria leva&nbsp; para se recuperar da descarga, se nesse
processo a 

&nbsp;&nbsp;&nbsp; corrente elétrica tem intensidade 20 A? (
sugestão definição de corrente 

&nbsp;&nbsp;&nbsp;&nbsp; elétrica)

6)
&nbsp;Um fio condutor é percorrido por uma corrente de 10 A. Calcule a carga
que 

&nbsp;&nbsp;&nbsp;&nbsp; passa&nbsp;
através de uma secção transversal em 1 minuto.

7)
Uma bateria de automóvel completamente carregada libera 1,3 x 105 

&nbsp;&nbsp;&nbsp; coulombs de&nbsp;
carga. Determine, aproximadamente, o tempo em horas que 

&nbsp;&nbsp;&nbsp; uma lâmpada, ligada&nbsp; nessa bateria, ficará acessa, sabendo que
necessita de 

&nbsp;&nbsp;&nbsp; uma corrente constante de&nbsp;2,0 A para
ficar em regime normal de 

&nbsp;&nbsp;&nbsp; funcionamento.


Questões&nbsp;
de Vestibulares




1)
(UEL –PR) Pela secção reta de um condutor de eletricidade passam 12,0 C a 

&nbsp;&nbsp;&nbsp; cada minuto. Nesse condutor a intensidade
da corrente elétrica em 

&nbsp;&nbsp;&nbsp; amperes,é igual a:

2) (UFSM
–RS) Uma lâmpada permanece acessa durante 5 minutos, por efeito 

&nbsp;&nbsp;&nbsp; de uma corrente de 2 A . Nesse intervalo de
tempo, a carga total ( em C) 

&nbsp;&nbsp;&nbsp; fornecida pela lâmpada é:

3) (PUC
–RS) A razão entre a carga que flui por uma secção reta de um 

&nbsp;&nbsp;&nbsp; condutor e o tempo gasto para essa carga
fluir define uma grandeza elétrica 

&nbsp;&nbsp;&nbsp; chamada de: