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13.1 Inducing a current

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Question 36
H

A moving-coil microphone detects a steady note. The note becomes louder without changing pitch. The microphone stays in the same position.

How does its electrical signal change?

[1]
A

Greater amplitude with a greater frequency.

B

The same amplitude with the same frequency.

C

Greater amplitude with the same frequency.

D

The same amplitude with a greater frequency.

Markscheme

13.1 Inducing a current Questions

  1. GCSE
  2. /Physics
  3. /13.1 Inducing a current

92 exam-style questions on Edexcel GCSE Physics 13.1 Inducing a current, covering 13.1.1 Producing an electric current by induction, 13.1.2 Factors affecting the induced potential difference, 13.1.3 Alternators and dynamos, and 13.1.4 Microphones and loudspeakers. Each one has a worked solution and a mark scheme showing where the marks go.

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