Question

How does a fuse wire protect electrical appliances?

Answer 1

i. The fuse wire is connected in series, in an electric circuit.

ii. When a large current passes through the circuit, the fuse wire melts due to Joule’s heating effect, and hence the circuit gets disconnected.

iii. Therefore, the circuit and the electric appliances are saved from any damage.

iv. The fuse wire is made up of a material whose melting point is relatively low.