Question

Suppose the resistance is 1.47 Ω at a temperature of 20°C. Find the resistance at 0 degree Celsius.

Answer 1

$RT=R_r\begin{bmatrix} 1+\alpha(T-T_r)\ \end{bmatrix}$

Where $R_T=$ Resistance of temperature T

$R_r=$ Resistance of reference Temperature $T_r$

$\alpha=$ Temperature coefficient of resistance at reference temperature $T_r$

$R_T=1.47[1+\alpha(0-20)]$

$=1.47(1-20\alpha)$