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4.2 Uses of magnetism

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Question 28
H

The table shows information about two transformers, P and Q.

Table

TransformerTurns on primary coilTurns on secondary coilPotential difference across primary coil (V)Potential difference across secondary coil (V)
P40010024060
Q250X1236

What is the value of X?

[1]
A

838383

B

750750750

C

274274274

D

100010001000

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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