A load is connected to a sinusoidal AC source and has a power factor of 0.6. If the RMS voltage is 100 V and the RMS current is 5 A, which statements are correct?
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Question

A load is connected to a sinusoidal AC source and has a power factor of 0.6. If the RMS voltage is 100 V and the RMS current is 5 A, which statements are correct?

G1 Physics · Accepted Answer

Apparent power S = VI = 500 VA. Average power P = VIcosφ = 300 W. Since sinφ = 0.8, |Q| = VIsinφ = 400 VAR. Also, by definition the power factor is cosφ = 0.6.