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12.3 The motor effect

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Question 6

A straight wire carrying a current is placed at right angles to a magnetic field.

  • The force on the wire is 0.24 N.
  • The current in the wire is 1.5 A.
  • The magnetic flux density is 0.40 T0.40\text{ T}0.40 T.

Calculate the length of the wire that is in the magnetic field.

Use the equation:

force=magnetic flux density×current×length \text{force} = \text{magnetic flux density} \times \text{current} \times \text{length} force=magnetic flux density×current×length
[2]
Markscheme

12.3 The motor effect Questions

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

10 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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