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4.2 Uses of magnetism

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Question 8
H

A simple electric motor spins clockwise.

Which change makes the motor spin anticlockwise?

[1]
A

Reversing the current and swapping the magnetic poles

B

Reversing the direction of the current only

C

Increasing the size of the current in the coil

D

Increasing the number of turns on the coil

Markscheme

4.2 Uses of magnetism Questions

  1. GCSE
  2. /Physics
  3. /4.2 Uses of magnetism

48 exam-style questions on OCR GCSE Physics 4.2 Uses of magnetism, covering 4.2.1 The motor effect, 4.2.2 Fleming's left-hand rule, 4.2.3 The force on a current-carrying conductor, 4.2.4 The electric motor, 4.2.5 Electromagnetic induction, 4.2.6 Alternators and dynamos, 4.2.7 How transformers work, 4.2.8 Transformer turns ratio, 4.2.9 Potential differences and turns in transformers, and 4.2.10 Microphones, loudspeakers and headphones. Each one has a worked solution and a mark scheme showing where the marks go.

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