O-LevelPhysicsElectricity5054/12 · May/June 2022 · Q371 Mark

The diagram shows a hairdryer. Which statement explains why the hairdryer does not need an earth wire?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AIt has a live wire.

BIt has a neutral wire.

CIt has double insulation.

DThe cable is insulated.

✓ Correct answer

C: It has double insulation.

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2022 Paper 1 Variant 2, question 37.

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