Question

We use alloys for making standard resistors because they have ____________.

Options

• low-temperature coefficient of resistivity and high specific resistance

• high-temperature coefficient of resistivity and low specific resistance

• low-temperature coefficient of resistivity and low specific resistance

• high-temperature coefficient of resistivity and high specific resistance

Answer 1

We use alloys for making standard resistors because they have a low-temperature coefficient of resistivity and high specific resistance.

Explanation:

Alloys have high specific resistance and a low-temperature coefficient of resistivity. If `alpha` = low, the value of 'R' will not change much with temperature, and if particular resistance is high, the needed wire length will be less.