Meters, loudspeakers and microphones

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• 8 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. Magnets and domain theory
2. Magnetisation and demagnetisation
3. Magnetic field due to a current
4. Magnetic field patterns of coils
5. Electromagnets
6. Strength of an electromagnet
7. Making an electromagnet
8. The force on a current-carrying conductor
9. Motor effect calculations
10. The electric motor
11. The electric bell and the relay
12. Meters, loudspeakers and microphones
13. Circuit breakers and the vehicle alternator
14. Review of the magnetic effect of a current