Electromagnetic induction written questions
Explain induced e.m.f., generators and transformers for G3 Pure / O-Level Physics, then check written answers with worked guidance.
Learning goals
- Deduce that a changing magnetic field can induce an e.m.f.
- Deduce that induced e.m.f. opposes the change producing it
- Deduce factors affecting induced e.m.f. magnitude
- Describe a simple A.C. generator and slip rings
- Sketch a simple A.C. generator voltage–time graph
- Describe a simple iron-cored transformer
- Apply ideal-transformer equations
- Explain cable loss and high-voltage transmission
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Beyond the syllabus: optional enrichment that does not count towards your progress.