Question

A nichrome wire PQ is dipped in water and current is passed through it . what happens to the current in the circuit and heat generated in the wire if the nichrome wire is repaced by an aluminium wire of same length and thickness as that of the nichrome wire​

Answer 1

This is because copper wire offers no resistance and thus electric current passes through them without producing heat energy whereas in nichrome offers a large resistance and thus the mechanical energy of the drifting electrons changes to heat energy rapidly .