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Microphones and speakers — OCR GCSE Physics A J249
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Physics
OCR GCSE Physics A
Magnetism and magnetic fields
Uses of magnetism
Microphones and speakers
OCR GCSE Physics A · J249
Microphones and speakers
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.
Revision notes
1
Microphones and speakers
7 key terms
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