temperature coefficient hard

Question

Resistance R(T)=R0(1+αT). For small α, fractional change per degree is approximately:

RankGuru · Accepted Answer

The temperature coefficient of resistance ($\alpha$) is defined as the change in resistance per unit resistance per unit change in temperature:
$\alpha = \frac{R_T - R_0}{R_0 \Delta T}$
- Rearranging: $\frac{R_T - R_0}{R_0} = \alpha \Delta T$
- For a unit change in temperature ($\Delta T = 1$), the fractional change in resistance $\frac{\Delta R}{R}$ is precisely $\alpha$.

Rank Guru

temperature coefficient hard

Select the correct option: