Q.
A capacitor 4µF charged to 50V is connected to another capacitor 2µF charged to 100V. The total energy of combination is
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a
13.3×10−3J
b
20×10−3J
c
5×10−3J
d
10×10−3J
answer is A.
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Detailed Solution
V=C1V1+C2V2C1+C2; U=12C1+C2V2
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