Question

Current I = \(I_{m} \sin \left(\omega t-\frac{\pi}{2}\right)\) is flowing in an ac circuit. If alternating voltage is V = V_m sin ωt, then consumed power is:

Answer 1

The answer is (d)
Power (P) = V_rms I_rms cosϕ
= V_rms I_rms Cos 90° = 0