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Q1
Figure 2 shows the parts of a moving-coil microphone.
(e) Explain how a moving-coil microphone works.
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(4)
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Sound waves cause the diaphragm to vibrate.
The vibrating diaphragm makes the coil vibrate.
The coil moves through the magnetic field.
This movement cuts magnetic field lines.
A potential difference is induced across the ends of the coil.
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