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4.2.10 Microphones and speakers — OCR Physics A J249 | GradeGen.AI
Physics A
Magnetism and magnetic fields
Uses of magnetism
Microphones and speakers
Microphones and speakers
OCR GCSE Physics A (J249) — Magnetism and magnetic fields
What You Need to Know
Explain the action of a microphone in converting sound pressure variations into current variations.
Explain the reverse effect used in loudspeakers and headphones.
Understand how dynamic microphones work using electromagnetic induction.
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Microphones and speakers
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