Edexcel IGCSE Physics · Spec 6.6-6.7
Electromagnetic Induction & Generators
Electromagnetic induction and how generators produce electricity.
Physics revision video
Electromagnetic Induction & Generators
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Spec 6.6-6.7
What you need to know
- Describe electromagnetic induction
- State what makes the induced voltage bigger
- Explain how an a.c. generator works
Active recall
Quick check
Answer each question before opening the answer.
What is electromagnetic induction?
A voltage is induced when a conductor cuts magnetic field lines, or when the field through a coil changes.
How can you increase the induced voltage in a generator?
Turn the coil faster, use a stronger magnet, or add more turns to the coil.
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