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Physics · May / June 2022 · Paper 12 · Question 37

5054Electrical safety

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

  1. AIt has a live wire.
  2. BIt has a neutral wire.
  3. CIt has double insulation.
  4. DThe cable is insulated.

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Correct answer: C. It has double insulation.

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