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12.3 The motor effect

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Question 15

A short straight section of the coil in a loudspeaker lies in a magnetic field that points from left to right across the page. The current in this section is perpendicular to the page, and the section is pushed up the page.

The magnet is then refitted the other way round, which reverses the field. The current is not changed.

In which direction is the conventional current in the section, and in which direction is the section pushed after the magnet is refitted?

[1]
A

Out of the page; down the page

B

Out of the page; up the page

C

Into the page; down the page

D

Into the page; up the page

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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