Show that the external work done for the plate separation

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A parallel-plate capacitor is charged by a battery, and the battery is then disconnected from the capacitor. Because the charges on the capacitor plates are opposite in sign,they attract each other. Hence, it takes positive work to increase the plate separation. Show that the external
work done when the plate separation is increased leads to an increase in the energy stored in the capacitor.

Reference no: EM13289852

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