Question

If the current and the voltage are out of phase by 90 degree, then the power is?
A. Maximum B. Minimum C. Zero D. None of these

Answer 1

Answer: if current and voltage are 90° out of phase from each other like in pure inductive circuit, the total power of the circuit would be 0 as follow. This shows that in case of pure inductive circuit, the total power of the circuit would have zero as Cos 90° = 0

So your final answer is C. Zero.

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