Question

What is the resistance temperature coefficient of nickel?

Answer 1

The temperature coefficient of resistance is the calculation of a relative change of electrical resistance of a substance per degree of temperature change.

1. It is denoted by the Greek word $\alpha$(alpha).
2. The formula for Temperature coefficient of resistance:

$$\begin{gathered} R=R_{ref}(1+\alpha (T-T_{ref}\left)\right) \\ \alpha =\frac{R-R_{ref}}{R_{ref}\left(T-T_{ref}\right)} \end{gathered}$$

Where
$R=$ The resistance of the conductor(that is nickel here) at a temperature $0°C$
$R_{ref}=$ The reference resistance at temperature $T_{ref}$
$\alpha =$ The temperature coefficient of resistance for the material.
$T=$ The material temperature in ${}^{\circ }\mathrm{celsius}=0°C$
$T_{ref}=$The reference temperature for which the temperature coefficient is specified.

Here, the resistance temperature coefficient of nickel is based on the reference temperature of $20°C$ is $59x{10}^{-4}°C^{-1}$.