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.

(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)