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MHT CET Physics question

PhysicsAlternating CurrentMHT CET

The average power dissipated in A.C. circuit is 2 watt. If a current flowing through a circuit is 2 A and impedance is 1 , what is the power factor of the A.C. circuit?

Answer: (A)

Solution

gives , so ; 1 would give 4

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Question ID VK-082075