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Crodoaldo
@Crodoaldo
September 2019
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1) Determine a corrente que percorre o resistor R3.
a) 0,8A
b) 1,2A
c) 9,6A
d) 0,6A
e) 0,24A
2)Determine a potência dissipada pela resistor R4.
a) 5,7W
b) 2,3W
c) 7,2W
d) 7,2V
e) 1,7W
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TiagoEd
1) U = R * i
24 = 40 * i
i = 24 / 40
i = 0,6 A
2) Req = R₁ + R₂ + R₃ + R₄
Req = 20 + 10 + 40 + 30
Req = 100 Ω
P = U² / R
P = 24² / 100
P = 576 / 100
P = 5,76 W
2 votes
Thanks 0
Crodoaldo
vc manja de 2 lei de ohm tambem ?
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Lista de comentários
24 = 40 * i
i = 24 / 40
i = 0,6 A
2) Req = R₁ + R₂ + R₃ + R₄
Req = 20 + 10 + 40 + 30
Req = 100 Ω
P = U² / R
P = 24² / 100
P = 576 / 100
P = 5,76 W