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4.2 Uses of magnetism

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Question 27
H

A transformer is connected to a 230 V supply. The primary coil has 500 turns. The potential difference across the secondary coil is 11 kV11\ \text{kV}11 kV.

Which value is closest to the number of turns on the secondary coil?

[1]
A

242424

B

101010

C

240024002400

D

24 00024\,00024000

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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