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  1. GCSE
  3. Physics OCR
  5. 4.2.10 Microphones, loudspeakers and headphones

4.2.10 Microphones, loudspeakers and headphones

Spec J249

Revise OCR GCSE Physics 4.2.10 Microphones, loudspeakers and headphones with the question bank and revision guides.

explain the action of the microphone in converting the pressure variations in sound waves into variations in current in electrical circuits, and the reverse effect as used in loudspeakers and headphones

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