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12.3 The motor effect

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Question 34
H

A conductor perpendicular to a magnetic field experiences a force of 72 mN. The magnetic flux density is 0.40 T0.40\ \mathrm{T}0.40 T and the length in the field is 60 mm. Use F=BIlF=BIlF=BIl. What is the current?

[1]
A

30 A30\ \mathrm{A}30 A

B

0.30 A0.30\ \mathrm{A}0.30 A

C

0.0030 A0.0030\ \mathrm{A}0.0030 A

D

3.0 A3.0\ \mathrm{A}3.0 A

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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