Mention the usefulness of a fuse in a domestic electrical circuit.

A fuse wire is a safety measure to prevent electric fires and short circuits. Some usefulness of Fuse:

•Without using Fuse we will be facing daily short circuited electric circuits.

•Device which require high current can damage permanently causing loss of money and resources.

•Also, fuse prevents electric fires.

Basically, Fuse wire is a conductor wire with a very low melting point. Low melting point is the main characteristic here. Working of fuse wire:

•Some devices require very high amount of current, the flow of so much current can sometime cause the melting of the insulating wire due to heating effect of the electric current.

•This can result into severe electric fires. To prevent these situation a fuse is introduced into the circuit, which is made up of a low melting point conductor wire.

•The wire inside the conductor melts and breaks the circuit as soon as the heating due to current increases.

This prevents further fire or electric short circuit.