When an additional charge of 2Cn given to a capacitor, energy stored in it is increased by 
. The original charge of the capacitor is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let QC be original charge of the capacitor and C be capacitance of the capacitor.
Initial energy stored in the capacitor is
When an additional charge of 2C is given to a capacitor, its charge on the capacitor becomes
Now energy stored in the capacitor is
As per question
(Using (ii))
or 
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