Physics · Oct / Nov 2019 · Paper 12 · Question 36

A mains electric circuit is fitted with a circuit breaker rather than a fuse. Where is the circuit breaker connected and what happens when the current is too large?

1. Athe live wire. / a thin wire melts and breaks the circuit.
2. Bthe live wire. / an electromagnet opens a switch.
3. Cthe neutral wire. / a thin wire melts and breaks the circuit.
4. Dthe neutral wire. / an electromagnet opens a switch.

As printed in the paper