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Energy Stored in a Charged Capacitor

When a capacitor is charged, energy is needed to remove electrons from the positive plate and push them onto the negative plate.The energy is stored as electrical potential energy.Work done W = QV. Therefore the area under the graph of V against Q is the energy stored by the capacitor.

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Specification: OCR Physics A (H556), A-level, 6.1.2 Energy. Topic: Capacitors.

Key terms in this lesson

magnetic flux
The product of the magnetic flux density and the area through which the field lines pass at right angles.

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