Question

The temperature coefficient of a metal as the temperature increases will ____________

(a) Decreases

(b) Increases

(c) Remains unchanged

(d) Increases and remains same

I have been asked this question by my school teacher while I was bunking the class.

This key question is from Advanced Problems on Network Theorems topic in division Useful Theorems in Circuit Analysis of Network Theory

Answer 1

Right option is (a) Decreases

To explain I would say: We know that the temperature coefficient is,

Given by, α = \(\frac{α_0}{1 + α_0 t}\)

Since temperature is present at the denominator, so with increase in temperature t, the denominator increases and hence the fraction decreases.

So, temperature coefficient decreases.