Question

why a copper wire in an closed circuit does not get hot ,but a nichrome wire becomes red and give out heat

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 .

hope this will help you.. :-)

Answer 2

Explanation:

Copper wire has a high melting point, which does not makes them hot. Nichrome, on three other hand, have low melting point.