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19.An isolate...

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19.An isolated parallel plate capacitor has electric energy E stored in it. If separation between the plates is decreased by 2% then energy stored in the capacitor is ?

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Q. The parallel-plate capactior shown in the figure has movable plates. The capacitor is charged so that the energy stored in it is E when the plate separation is d. The capacitor is then isolated electrically and the plates are moved such that the plate separation becomes 2d.

At this new plate separataion, what is the energy stored in the capacitor, neglecting fringing effects?

Q. Energy stored in between the plates of parallel plate capacitor of area

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ε_{0} - permittivity

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