Question

What happens when the temperature coefficient of resistance is negative ? explain .​

Answer 1

Answer:

A positive coefficient for a material means that its resistance increases with an increase in temperature. ... A negative coefficient for a material means that its resistance decreases with an increase in temperature.

Explanation:

The more the atoms jostle around in the material, the more collisions are caused and hence the greater the resistance to current flow. In an insulator however, there is a slightly different situation. ... When resistance FALLS with an increase in temperature, the material is said to have a NEGATIVE TEMPERATURE COEFFICIENT.

Answer 2

Explanation:

A positive coefficient for a material means that its resistance increases with an increase in temperature. ... A negative coefficient for a material means that its resistance decreases with an increase in temperature

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