Cambridge IGCSE Physics
4.2.3Electromotive force and potential difference
Electromotive force and potential difference in Cambridge IGCSE Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic14 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 4.2.3.1Define e.m.f. as the electrical work done by a source in moving unit charge around a complete circuit.
- 4.2.3.2Know that e.m.f. is measured in volts.
- 4.2.3.3Define potential difference as the work done by unit charge passing through a component.
- 4.2.3.4Know that potential difference is measured in volts.
- 4.2.3.5Describe using analogue and digital voltmeters with different ranges.
- 4.2.3.6Supplement: use E = W/Q for e.m.f.
- 4.2.3.7Supplement: use V = W/Q for potential difference.
Lessons
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E.m.f. and potential difference
25 min
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Sample question
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