Question

Electric fuse is working on ……………….. Principle.
(a) control of voltage in circuit
(b) chemical effect of electric current
(c) control of current in circuit
(d) heating effect of electric current

Answer 1

Hint – In this issue, using the principle that electrical fuses are composed of low melting point material as soon as the heat effect generated by the current reaches a certain limit that this fuse melts to break the circuit and then no current flows through the circuit.

Complete step-by-step answer:

The heating effect of electric current is worked on by the electric fuse.
This creates heat when electricity passes through the wires.
Fuse is made of a small melting point.
Because of the heat generated by the electrical current, the fuse breaks down as excess current passes through the fuse and prevents excess flow of electrical current.

It is positioned with the electrical circuit in series which it is intended to secure.
The critical component is a metal strip which will melt when the electrical current in the circuit reaches the measured value of the fuse.
The part in the fuse melts, and the circuit opens.
An electric fuse wire works on electric current heating effects.
And that's the answer you need.
Therefore choice (D) is the appropriate answer.

Note – The key reason for generating heat through electric current should be clear when solving these problems. These electrons hold electrical current due to the movement of electrons as these electrons collide with each other, some kinetic energy induces a transfer of energy, and thus heat is generated and the conductor temperature increases.