Question

A fuse is made up of an alloy of materials having a low melting point. Why the melting point should be low?

Answer 1

1. A fuse wire has high resistance and low melting point so that if a current of large magnitude passes through the wiring then it can melt and save the appliances.
2. The material used for making fuse elements is an alloy of lead and tin.

Hence, a fuse is made up of an alloy of materials having a low melting point.