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13.1 Inducing a current

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Question 30
H

An alternator produces a peak potential difference of 4.0 V at 20 Hz. Its speed of rotation is doubled. The peak potential difference is proportional to the speed.

What is the new output?

[1]
A

Peak potential difference 8.0 V8.0\ \mathrm{V}8.0 V; frequency 20 Hz20\ \mathrm{Hz}20 Hz.

B

Peak potential difference 4.0 V4.0\ \mathrm{V}4.0 V; frequency 40 Hz40\ \mathrm{Hz}40 Hz.

C

Peak potential difference 8.0 V8.0\ \mathrm{V}8.0 V; frequency 40 Hz40\ \mathrm{Hz}40 Hz.

D

Peak potential difference 4.0 V4.0\ \mathrm{V}4.0 V; frequency 20 Hz20\ \mathrm{Hz}20 Hz.

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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