// Exa 2.5
clc;
clear;
close;
// Given data
n=6.023*10^23*7.4/63.54;
miu= 32.6;// in cm^2/Vs
q=1.6*10^-19;// in C
sigma= n*q*miu;// in (Ωcm)^-1
disp(sigma,"Conductivity of copper in (Ωcm)^-1 is : ")