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GCSE Level Questions: Transformers

Q11. The diagram shows how electricity is supplied to consumers by the National Grid.

(a) Explain why transformer X is used in the National Grid.

[4 marks]

(b) Explain why transformer Y is used in the National Grid.

[2 marks]

(c) The town of Hornsdale in Australia has electricity supplied by a huge battery.

On one day the battery transferred 3.24 × 1011 J of energy to the town.

The potential difference of the town's electricity supply is 230 V.

Calculate the charge flow to the town on this day. (Give your answer to 3 significant figures).

[4 marks]

(Total 10 marks)