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The instantaneous current and voltage of an a.c. circuit are given by 1 = 10 sin 300 t A and V = 200 sin 300 t V.What is the power dissipation in the circuit ? |
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Answer» SOLUTION : It is clear that current and voltage are in same phase, hence, power factor `cos phi =1`. `therefore` Power `=V_(rms) I_(rms) = 1/2 V_(m)I_(m) =1/2 xx 200 xx 10= 1000 `W. |
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