An electric fuse is crucial in domestic circuits as it prevents damage to appliances and the circuit caused by overloading or short circuits. It acts as a safety device by breaking the circuit when excessive current flows, safeguarding against potential ...

A simple rule can be used to find the direction of the force on the conductor when the current is at right angles to the magnetic field.

The displacement of the rod is largest when the direction of current is at right angles to the direction of the magnetic field.

Changing the direction of the magnetic field to vertically downwards results in the reversal of the force acting on the current-carrying rod.

The direction of the force on the conductor is reversed when the direction of current through the conductor is reversed.