GCSE Level Questions: Transformers
Q3. The diagram shows a transformer
(a)
(i) What is part A?
Part A is the secondary(coil) / output (coil) 
(1 mark)
(ii) What is part B and what is it made of?
Part B is the core made of (laminated soft) iron.
(2 marks)
(iii) When there is an alternating current in the primary coil, what is produced in part B?
A magnetic field which is changing / alternating is produced in part B.
(2 marks)
(b) Transformers are used in the National Grid. The diagram shows part of the National Grid.
Complete the sentence in the box:
Transformer C is a step-up transformer and
transformer D is a step-down transformer.
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(1 mark)
(c) This is an item from a newspaper.
Which two suggestions would reduce the possible risk to people's health?
A: Do not build new houses near to existing power lines.
B: Move the power lines so that they take the shortest routes.
C: Move each power station to the centre of the nearest city.
D: Build new power lines away from where people live.
E: Use more transformers in the National Grid.
(2 marks)
(8 Marks Total)
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