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A sinusoidal A.C. current flows through a resistor of
P resistance \( R \). If the peak current is \( I_{P} \), then the power

W dissipated is :-
(1) \( \mathrm{I}_{\mathrm{p}}^{2} \mathrm{R} \cos \theta \)
(2) \( \frac{1}{2} \mathrm{I}_{\mathrm{p}}^{2} \mathrm{R} \)
(4) \( \frac{1}{\pi^{2}} \mathrm{I}_{\mathrm{p}}^{2} \mathrm{R} \)
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