
ELT_03_circuito_série
Authored by Marcelo Coutinho
Physics
University
Used 12+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Escolha a opção que define a Lei de Ohm:
V = I*R
I = V*R
R = V*I
R = I*V
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Escolha a opção que define Potência Elétrica:
P = R*I
P = V/R
P = R*I2
P = R/V2
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Circuito Série é aquele em que:
A tensão é a mesma em todos os elementos do circuito.
A corrente é a mesma em todos os elementos do circuito.
A corrente é diferente em todos os elementos do circuito.
A tensão e a corrente são as mesmas em todos os elementos do circuito.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A resistência equivalente do circuito mostrado vale:
1 / (R1+R2+R3)
R1+R2+R3
1 / (1/R1+1/R2+1/R3)
V / (R1+R2+R3)
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Assinale a alternativa incorreta. Uma corrente elétrica ao atravessar uma resistência elétrica, provoca:
Queda de tensão
Aumento de tensão
Dissipação de potência elétrica
Efeito Joule (esquenta a resistência)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
No circuito mostrado, seja V=10V, R1=0 ohms, R2=2 ohms, e R3=3 ohms. Então:
i = 10 A
i = 0,5 A
i = 2 A
P fonte = 5 W
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se V= 50 V, R1= 25 ohms, R2= 25 ohms, assinale a alternativa INCORRETA:
As potências em ambos os resistores são as mesmas.
A resistência equivalente do circuito vale 50 ohms.
A corrente indicada vale i = - 1 A
A potência total dissipada nos resistores vale P= 100 W
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