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12.3 The motor effect

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Question 43
H

At one instant, side P of a motor coil is to the left of the axle and experiences an upward force. After half a turn, P is to the right of the axle. The split-ring commutator operates correctly. Which gives the force on P after this half-turn and the direction of the turning effect?

[1]
A

Force upwards; turning effect in the original direction

B

Force downwards; turning effect opposite to the original direction

C

Force upwards; turning effect opposite to the original direction

D

Force downwards; turning effect in the original direction

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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