A) \[T,5T,9T\]
B) \[\frac{T}{2},\frac{5T}{2},\frac{9T}{2}\]
C) \[0,T,2T,3T\]
D) \[0,\frac{T}{2},T,\frac{3T}{2}\]
Correct Answer: D
Solution :
(d) \[0,\frac{T}{2},T,\frac{3T}{2}\] Total time period, \[T=\frac{1}{v}=\frac{1}{159.24}=6.28\,ms\] Total charge on capacitor at time, t \[Q'=Q\,\cos \frac{2\pi }{T}t\] For energy stored is electrical, we can write \[Q'=\pm \,Q\]. Hence, energy stored in the capacitor is completely electrical at, \[t=0,\frac{T}{2},T,\frac{3T}{2},......\]
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