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0 votes
28.0k views
in Physics by (50.2k points)

The potential difference V across and the current I flowing through an instrument in an AC circuit are given by :

V = 5 cos ωt volt

I = 2 sin ωt volt

The power dissipated in the instrument is :

(A) zero 

(B) 5 watt

(C) 10 watt 

(D) 2.5 watt

1 Answer

+1 vote
by (56.8k points)
selected by
 
Best answer

Correct Answer is: (A) zero 

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