The temperature coefficient of resistivity for a "perfect" ohmic material would be:
A)positive and constant.
B)zero.
C)negative.
D)positive and uniformly increasing.

Question

Quizplus · Accepted Answer

A "perfect" ohmic material is one whose resistance remains constant over a wide range of temperatures. Mathematically, this means that its temperature coefficient of resistivity (TCR) is zero. Therefore, option B is the correct choice.

The Temperature Coefficient of Resistivity for a "Perfect" Ohmic Material