NEET | 2017CapacitanceEasy

Question

A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :-

Options

A.

Decreases by a factor of 2

B.

Remains the same

C.

Increases by a factor of 2

D.

Increases by a factor of 4

Solution

Ui = 12CV2
Uf=12[2C]V22=12Ui
Increases by a factor of 4

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