‘A’ and ‘B’ are two condensers of capacities 2 µF and 4 µF. They are charged to potential differences of 12V and 6V respectively. If they are now connected (+ve to +ve), the charge that flows through the connecting wire is
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a
24 µC from A to B
b
8 µC from A to B
c
8 µC from B to A
d
24 µC from B to A
answer is B.
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Detailed Solution
Charge flow ΔQ=C1V1−Vowhere V0 → common potential t → thickness of metal sheet