Question an isolated 530 microf parallel-plate capacitor, Ask an Expert

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Question: An isolated 5.30 µF parallel-plate capacitor has 3.50mC of charge. An external force changes the distance between the electrodes until the capacitance is 2.90 µF.

Part A: How much work is done by the external force?

I want help to find how much work is done by the external force.

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