//Exa2.16
clc;
clear;
close;
disp("Let the temperature coefficient of resistance of material at 0 degree C be alpha0");
disp("Resistance at 25 degree C, R1 = R0 * (1+25*alpha0)                (i)");
disp("Resistance at 70 degree C, R2 = R0 * (1+70*alpha0)                (ii)");
disp("Dividing Eq.(ii) by Eq.(i), we get");
disp("R2/R1= (1+70*alpha0)/(1+25*alpha0)");
disp("or  57.2/50 = (1+70*alpha0)/(1+25*alpha0)");
disp("or alpha0 = 0.00348 ohm/ohm/degree C");