CapacitanceHard

Question

A capacitor of capacitance C is charged to a potential difference V0. The charging battery is disconnected and the capacitor is connected to a capacitor of unknown capacitance CX. The potential difference across the combination is V. The value of Cx should be -

Options

A.
B.
C.
D.

Solution


(A)
Common potential V =
                            V (C + Cx) = V0C
                            C + Cx = C
                            Cx = C
                            Cx =

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