Physics 5054 · O Level · Electrical safety

Electrical safety — practice question

A metal kettle is connected to a mains socket using a plug that has a suitable fuse fitted. The kettle’s cable becomes damaged, and the fuse blows. Why does the fuse blow?

  • AThe bare earth wire in the cable touches the bare live wire.
  • BThe metal casing of the kettle touches the bare earth wire.
  • CThe bare neutral wire in the cable touches the bare earth wire.
  • DThe live wire breaks without touching any other wire.

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