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Counter-Strike: Source (2004)

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In an a.c. circuit, the instantaneous e.m.f. and current are given by \( \mathrm{e}=100 \sin 30 \mathrm{t} \)
\( \mathrm{P} \) \( \mathrm{i}=20 \sin \left(30 \mathrm{t}-\frac{\pi}{4}\right) \)

W
In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively
(A) \( \frac{50}{\sqrt{2}}, 0 \)
(B) 50,0
(C) 50,10
(D) \( \frac{1000}{\sqrt{2}}, 10 \)
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