A) \[({{C}_{1}}+{{C}_{2}})/{{C}_{1}}\]
B) \[{{C}_{1}}/({{C}_{1}}+{{C}_{2}})\]
C) \[{{C}_{1}}{{C}_{2}}\]
D) \[{{C}_{1}}/{{C}_{2}}\]
Correct Answer: A
Solution :
Energy (U) \[=\frac{{{q}^{2}}}{2C}\]. q remains same so \[U\propto \frac{1}{C}\] Þ \[\frac{{{U}_{Before}}}{{{U}_{After}}}=\]\[\frac{{{C}_{1}}+{{C}_{2}}}{{{C}_{1}}}\]You need to login to perform this action.
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