MAINS ELECTRICITY

1 mark · Normal

Which device is designed to automatically switch off the circuit if the current becomes too large?

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Correct option: circuit breaker

Common mistakes: Fuse (which must be replaced, not switched on again)

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Marking points

B1 · 1 mark · Selects 'circuit breaker' as the correct device.

Worked solution

The correct answer is circuit breaker. It automatically opens the circuit when the current is too high.