A moving-coil microphone is a type of device that changes sound waves into electrical signals. It works when sound waves cause a small diaphragm to move. This diaphragm is attached to a coil of wire. The coil then moves back and forth within a magnetic field, which induces an electrical current. This current matches the pattern of the original sound wave. Moving-coil microphones are common because they are durable, reliable, and good at capturing loud sounds without distorting them. These microphones are often used in concerts and recording studios. Understanding how they work can help students learn about energy changes and electromagnetic induction, which are key parts of GCSE Physics.
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