Q.
In the circuit shown in figure, magnitude of instantaneous power consumed by the capacitor is
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a
zero
b
V02ωc2sin2ωt
c
V02ωt2
d
V02ωC cos2ωt
answer is B.
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Detailed Solution
If Q be the instantaneous charge, then QC=v∴Q=Cv=CV0cosωt⇒i=dQdt=−CV0ωsinωt∴ Magnitude of instantaneous powerp=vi=V0cosωt×CV0ωsinωt=V02ωC2sin2ωt
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