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.
Measuring the Energy Stored in a Charged Capacitor.
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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.
More in Capacitors
- Charging a Capacitor and Constant Current
- Capacitance
- Use of Capacitors
- Energy Stored in a Charged Capacitor
- Energy stored in a Thundercloud
- Discharging a Capacitor through a Fixed Resistor
- Exponential Decay.
- The Time Constant RC
All 12 lessons in Capacitors · All OCR A-level Physics topics