Question

give reason why a fuse wire melts on passing an excessive current in short​

Answer 1

Answer:

Fuses are sacrificial devices used to protect much more expensive electrical components from the damaging effects of overcurrent. ... When too much current flows through the low resistance element of the fuse, the element melts and breaks the circuit.

Answer 2

electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current