The following voltage and current phasors apply to the circuit in Figure P16–3. Calculate the average power and reactive power delivered to the impedance Z. Find the power factor and state whether the power factor is lagging or leading.

(a) V ¼ 250ff0 VðrmsÞ; I ¼ 0:25ff 15 AðrmsÞ

(b) V ¼ 120ff135 VðrmsÞ; I ¼ 12:5ff165 AðrmsÞ

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+ I V Z FIGURE P16-3