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                                    Two condensers, one of capacity C and the other of capacity are connected to a V volt battery, as[AIPMT-2007, RPMT-2008)2shown.The work doen in charging fully both the condensers is(1)2cVса4(3) cV22(4) CV2(2)hame a narallel nlate condenser of plate separation d and plate area of cross- | 
                            
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Answer»  here equivalent total capacitances is c+c/2 = 3c/2 and work done is = (1/2)(Ceq)V² = (1/2)*3C/2*v² = 3/4cv². your option is wrong work done by battery is cv^2 so 3/2 cv^2 is the correct answer  | 
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