does temperature have any effect on resistivity of an alloy
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Answer:
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. More temperature - more oscillations - more collisions of electrons with atoms - less mobility - more resistivity. In alloys, like constantan, atoms are in disorder so alloys have big resistivity. Their additional disorder due to temperature increase is insignificant. That is why alloys have no temperature dependence of resistivity. The same picture is with metal glasses
Answer:
In metallic resistance the resistivity of a resistance increase with increase in temperature but alloys have approx negligible temperature coefficient that is the reason why resistivity of alloy resistance remains same that is there is no effect of temperature on alloy resistance .