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12.3 The motor effect

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Question 38
H

A student plots magnetic force F F\,F against current I I\,I for a wire perpendicular to a uniform field. The gradient is 0.018 N/A. The length of wire in the field is 75 mm. Use F=BIlF=BIlF=BIl. What is the magnetic flux density?

[1]
A

0.00135 T0.00135\ \mathrm{T}0.00135 T

B

0.00024 T0.00024\ \mathrm{T}0.00024 T

C

4.17 T4.17\ \mathrm{T}4.17 T

D

0.24 T0.24\ \mathrm{T}0.24 T

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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