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A capacitor of capacitance C is charged ...

A capacitor of capacitance C is charged to a potential difference `V_0`. The charging battery is disconnected and the capacitor is connected to a capacitor of unknown capacitance `C_x`. The potential difference across the combination is V. The value of `C_x` should be

A

`(C(V_0-V))/V`

B

`(C(V-V_0))/V`

C

`(CV)/V_0`

D

`(CV_0)/V`

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The correct Answer is:
A
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