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Find out the following if A is connected...

Find out the following if A is connected with C and B is connected with D.
How much charge flows in the circuit.

Text Solution

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Let potential of B and D is zero and common potential on capacitors is V, then at A and C it will be V.
By charge conservation, 3V+2V=40+30

5v=70 V=14 volt
Charge flow =40-28= `12muC`
Now final charges on each plate is shown in the figure.
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