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12.3 The motor effect

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Question 33
H

A wire is 80 cm long, but only 45 mm lies in a uniform magnetic field. This section is perpendicular to the field. The current is 2.4 A and the magnetic flux density is 0.30 T0.30\ \mathrm{T}0.30 T. Use F=BIlF=BIlF=BIl. What is the magnetic force?

[1]
A

32.4 N32.4\ \mathrm{N}32.4 N

B

0.576 N0.576\ \mathrm{N}0.576 N

C

0.0324 N0.0324\ \mathrm{N}0.0324 N

D

0.324 N0.324\ \mathrm{N}0.324 N

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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