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Measuring the Energy Stored in a Charged Capacitor.

The energy transferred to a lightbulb when a capacitor discharges can be measured with a joulemeter. The capacitor's potential difference is measured and the joulemeter is read before and after the capacitor discharge. The difference in the joulemeter reading is the energy stored in the capacitor before it was discharged.

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

Key terms in this lesson

magnetic field
A region of space in which a moving charge, current-carrying conductor or magnetic material experiences a force.
electromagnetic induction
The generation of an electromotive force in a conductor when it experiences a change in magnetic flux.

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