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4.2 Uses of magnetism

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Question 9
H

A student wants to find out how the speed of a magnet moving through a coil affects the maximum potential difference induced across the coil.

She has this apparatus:

  • a coil of wire connected to a data logger that records the induced potential difference
  • a strong cylindrical magnet
  • a clear plastic tube that fits through the coil
  • a metre ruler
  • a clamp stand

Describe how the student could carry out the investigation.

In your answer, describe the results you would expect and explain them.

[6]
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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