The RMS voltage phasor of a circuit is 10 ∠ 15° V and the RMS current phasor is 2 ∠ -45° A. What are the active power (P) and reactive power (Q) in the circuit respectively?

A single-phase AC circuit has an apparent power of 600 VA and an active power of 480 W. Calculate the power factor of the circuit.

The input voltage to a load is Vi = 100 sin(314t) V and the current drawn is i = 10 sin(314t - π3) + 5√2 sin(3 × 314t + π4) + 5√2 sin(5 × 314t + π6) A. The load power factor is: