Question

we prefer alloys to metals because with rise in temperature the resistance​

Answer 1

Answer:

Explanation:

One of defects of usual metal is oscillations of atoms due to temperature. ... In alloys, like constantan, atoms are in disorder so alloys have big resistivity. Their additional disorder due to temperature increase is insignificant.

Answer 2

Answer:

Metals, including alloys, have free electrons as charge carriers. Their movement controls by defects. One of defects of usual metal is oscillations of atoms due to temperature. ... In alloys, like constantan, atoms are in disorder so alloys have big resistivity