Question

When the electric current through the fuse exceeds a certain limit, the fuse wire melts and breaks.

• A. True
• B. False

Answer 1

The correct option is A True

Fuse

1. Fuse is an electrical device that is included in the household circuits.
2. It utilizes the basis of the heating effect of current.
3. It is manufactured by using such a wire that possesses a very high resistivity or gets heated up quickly when excessive current is passed.

Working principle of fuse

1. A household circuit contains a very complicated combination that interconnects several types of appliances.
2. So, in case a huge amount of voltage is supplied through the wire, the resistance increases and it might damage the electrical appliances.
3. Therefore, a fuse is installed in series with a circuit that contains a wire with a very high resistivity or gets heated up quickly when excessive current is passed.
4. The fuse breaks down when resistance passing through the fuse exceeds a given safety limit.
5. Hence, the appliances are protected from further damage.

Hence, the given statement is true.