Which of these is true about an electric fuse?

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The circuit breaks due to overheating and melting of wire thus preventing the appliance from damage.

The automatic fuse is called MCBs (Miniature Circuit Breakers).

The traditional fuse once broken, needs to be replaced by the new one.

All of the given options.

answer is D.

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Detailed Solution

A fuse is a very thin safety piece of wire that will melt and break the circuit when a large amount of current flows through it.
A traditional fuse consists of a wire that is made up of a special material than can melt quickly when a large current is passed through it. Since the wire melts down, it needs to replaced by the new one.
Whereas, MCBs (Miniature Circuit Breakers) are switches which automatically turn off
when the current in a circuit exceeds the safe limit. It can be turned on again to complete the circuit.

Therefore, all the 3 statements are correct.

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