Q.

Two condensers, 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

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a

2CV2

b

14CV2

c

34CV2

d

12CV2

answer is C.

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Detailed Solution

Q = CV, In parallel, V = constant.Net capacitance of circuit= C + C2= 3C2Work done by the battery to fully charge both the capacitors = 12×3C2×V2=3CV24
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Two condensers, 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