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12.3 The motor effect

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Question 30
H

A straight wire carries conventional current upwards in the plane of the page. Initially, the magnetic field acts out of the page. The current is then reversed and the field strength is doubled without changing its direction. Which describes the new force compared with the original force?

[1]
A

Twice as large, acting to the left

B

Twice as large, acting to the right

C

Half as large, acting to the right

D

Half as large, acting to the left

Markscheme

12.3 The motor effect Questions

  1. GCSE
  2. /Physics
  3. /12.3 The motor effect

86 exam-style questions on Edexcel GCSE Physics 12.3 The motor effect, covering 12.3.1 The motor effect, 12.3.2 Fleming's left-hand rule, 12.3.3 Force on a conductor, and 12.3.4 Electric motors. Each one has a worked solution and a mark scheme showing where the marks go.

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