Safety devices

1 mark · Easy

Which part of a UK three-pin plug is made of plastic for safety?

AThe casingBThe live pinCThe earth pinDThe fuse

› Show answer

Correct option: The casing

Common mistakes: The earth pin

› Show mark scheme and worked solution

Marking points

B1 · 1 mark · Correct option only.

Worked solution

The casing is plastic, acting as an insulator to prevent electric shock.

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