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Questions  

A 600 pF capacitor is charged by a 200 V supply. It is then disconnected from the supply and is connected to another uncharged 600 pF capacitor. What is the common potential (in V) and energy lost (in J) after reconnection?

a
100, 6×10−6
b
200, 6×10−5
c
200, 5×10−6
d
100, 6×10−5

detailed solution

Correct option is A

VC=C1V1C1+C2=100 VEnergy lost =Ui−Uf=12C1V12−12C1+C2Vc2=6×10−6 J

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