Question

Name the device used to protect the electric circuits from overloading and short circuits. On what effect of current does it work ?

Answer 1

An electric fuse is a safety device which is used to limit the current in an electric circuit. It works on the heating effect of current.
The main element in a fuse is the fuse wire, lead-tin alloy which has a low melting point and high specific resistance.
When the current exceeds a specified rating, the wire melts, thereby cutting off the electricity supply to our devices, and keeping them safe from damage.