Question

how to caluclate the temparature co-efficient of resistance of superconducting materials

Answer 1

\[\frac{ ∆R }{ R_o }=\alpha∆T \]
alpha is the temp coeff or resistance.
if at some given standard temp
\[\frac{ R-R_o }{ R_o } = \alpha∆T-T_o \]
or
\[R = R_o [1+\alpha(T-T_o)]\]