CAIE IGCSE Physics: Electromotive Force Definition Question Bank
Practise defining e.m.f. as work done by a source per unit charge around a complete circuit, with the source role made clear.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- state e.m.f. as work done by a source per unit charge around a complete circuit
- distinguish the source doing work from energy transfer in an external component
4.2.3.1—Electromotive force (e.m.f.) as the question 1
A washing machine has an electric motor and an electric heater. Fig. 7.1 shows a simplified circuit diagram for the washing machine.
Fig. 7.1
The heater has a resistance of and the power supply has an electromotive force (e.m.f.) of 230 V .
State the meaning of electromotive force.
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