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An alternating supply of 220 V is applie...

An alternating supply of 220 V is applied across a circuit with resistance `22 Omega` and impedance `44 Omega`. The power dissipated in the circuit is

A

1100W

B

550W

C

2200 W

D

(2200/3)W

Text Solution

Verified by Experts

The correct Answer is:
B
Here ` V = 220V , R = 22Omega , Z = 44 Omega`
Current in circuit , `I =V/Z = (220V)/(44 Omega) = 5A`
Power dissipated in the circuit , `P = I^2 R = (5)^2 xx 22 = 550 W`
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