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In an ac circuit, the instantaneous value of emf and current are E = 200 sin 314 t(V) and I = 100sin (314t +π/2)A.

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In an ac circuit, the instantaneous value of emf and current are E = 200 sin 314 t(V) and I = 100sin (314t + π/2)A. The average power consumed is 

(a) 20kW 

(b) 2kW 

(c ) zero 

(d ) 25kW

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1 Answer

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by (46.6k points)

Correct option is : (c) zero

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