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A parallel plate capacitor is connected to a constant external voltage supply for a long time...

A parallel plate capacitor is connected to a constant external voltage supply for a long time and stores 8.10 mJ of energy. We now fully fill the air-gap with a dielectric material of dielectric constant 38.93, while keeping the capacitor connected to the voltage supply. How much energy will the capacitor store? Give your answer in units of mJ.

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Answer #1

In this question, Area(A), Gap(d) and supply voltage (V) is constant so this will be cancelled at the time of division of equations.

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