In an ac circuit, the current is given by $i=5\mathrm{sin}\text{\hspace{0.17em}}\left(100\text{\hspace{0.17em}}t-\frac{\pi }{2}\right)$ and the ac potential is V = 200 sin(100) volt. Then the power consumption is

(1) 20 watts

(2) 40 watts

(3) 1000 watts

(4) 0 watt

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