Question

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Answer 1

Answer:

4) A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected.

Step-by-step explanation:

3) Electromagnets are very widely used in electric and electromechanical devices, including:

Motors and generators.

Transformers.

Pickups.

Relays.

Electric bells and buzzers.

Loudspeakers and headphones.

Actuators such as valves.

Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.