Lesson: Chapter 13 — Electromagnetism and electromagnetic induction

The microphone and the bicycle dynamo 1 of 4 Reset answers

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Question 1

What energy change happens in a microphone?

A Heat to electrical B Light to sound C Sound to electrical D Electrical to sound

The right answer is the one marked above.

Sound to electrical. The vibrating coil in a magnetic field has an emf induced in it.

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