Answer:
[tex]0.0034^oC^{-1}[/tex]
Explanation:
The temperature coefficient (α) of the resistor can be calculated as follows:
[tex] R =R_o[1+\alpha(T-T_o)][/tex]
Where, R is the resistance at temperature T, [tex]R_o[/tex] is the resistance at temperature [tex]T_o[/tex]
Substitute the values:
[tex] 224\Omega=80.2\Omega[1+\alpha(522^o C-0^oC)]\\ \Rightarrow \alpha = \frac{2.8-1}{522} = 0.0034^oC^{-1}[/tex]
