16–4 The following sets of V and I apply to the circuit in Figure P16–3. Calculate the complex power and the power factor. State whether the power factor is lagging or leading.

(a) V = 120ff30 V ðrmsÞ, I = 3:3ff−15 AðrmsÞ

(b) V = 440ff45 V ðrmsÞ, I = 8ff95 AðrmsÞ