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Microphone

Key Stage 3

Meaning

A picture of a microphone.

A microphone is an electrical device that turns the vibration of a sound into an electrical signal.

About Microphones

Sound transfers information which a microphone converts into an electrical signal.
Microphones use a coil of wire and a permanent magnet to turn a vibration into an electrical signal.
When the receiver vibrates the coil of wire moves around the permanent magnet to make a current in the coil of wire.
MicrophoneDiagram.png
A diagram of a microphone.

Key Stage 4

Meaning

A picture of a microphone.

A microphone is an electrical device that turns the vibration of a sound into an electrical signal using the generator effect.

About Microphones

Sound transfers information which a microphone converts into an electrical signal.
Microphones use a coil of wire and a permanent magnet to induce a current in the coil when receiver vibrates.
When the receiver vibrates the coil of wire moves around the permanent magnet to make a current in the coil of wire.
MicrophoneDiagram.png
A diagram of a microphone.

References

AQA

Microphone, moving-coil, pages 195, 262, GCSE Physics; Student Book, Collins, AQA
Microphones, page 225, GCSE Physics; Third Edition, Oxford University Press, AQA
Microphones, page 235, GCSE Physics, Hodder, AQA
Microphones, page 307, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Microphones, page 97, GCSE Physics; The Revision Guide, CGP, AQA

Edexcel

Microphones, page 175, GCSE Physics, Pearson Edexcel
Microphones, page 284, GCSE Physics, CGP, Edexcel
Microphones, page 90, GCSE Physics; The Revision Guide, CGP, Edexcel

OCR

Microphones, page 56, Gateway GCSE Physics; The Revision Guide, CGP, OCR
Microphones, pages 136-137, 145, 148, Gateway GCSE Physics, Oxford, OCR