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Two condenser,one of capacity C and the ...

Two condenser,one of capacity C and the other of capacity `C/2` are connected to a V-volt battery, as shown. The work done in charging fully both the condensers is :
.

A

`1/2CV^2`

B

`2CV^2`

C

`1/4CV^2`

D

`3/4CV^2`

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