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Questions  

Three uncharged capacitors of capacities C1, C2 and C3 are connected as shown in the figure to one another and the points A, B and C are at potentials V1, V2 and V3 respectively. Then the potential at O will be

a
V1C1+V2C2+V3C3C1+C2+C3
b
V1+V2+V3C1+C2+C3
c
V1V2+V3C1C2+C3
d
V1V2V3C1C2C3

detailed solution

Correct option is A

If potential at O is V thenV1-VC1=V-V2C2+V-V3C3C1+C2+C3V=V1C1+V2C2+V3C3V=V1C1+V2C2+V3C3C1+C2+C3

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Two capacitors C1 and C2 having capacitance 2μF and 4μF respectively are connected as shown in the figure. Initially C1 has charge 4μC and C2 is uncharged. After long time closing the switch S :


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