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4.1 Magnets and magnetic fields

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Question 14
F

A plotting compass is placed next to a wire. When there is a current in the wire, the compass needle points east.

The direction of the current is reversed. The size of the current is not changed.

Ignore the Earth's magnetic field.

In which direction does the compass needle now point?

[1]
A

West

B

East

C

North

D

South

Markscheme

4.1 Magnets and magnetic fields Questions

  1. GCSE
  2. /Physics
  3. /4.1 Magnets and magnetic fields

44 exam-style questions on OCR GCSE Physics 4.1 Magnets and magnetic fields, covering 4.1.1 Magnetic poles, attraction and repulsion, 4.1.2 Permanent and induced magnets, 4.1.3 The magnetic field of a magnet, 4.1.4 Compasses and the Earth's magnetic field, 4.1.5 The magnetic field around a current-carrying wire, 4.1.6 Field strength, current and distance, and 4.1.7 Solenoids and electromagnets. Each one has a worked solution and a mark scheme showing where the marks go.

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