//Exa 11.1 clc; clear; close; //Given data : rho=5*10^14*10^-2;//ohm-m l=5*1000;//m r1=1.25;//m r2=r1+1;//m R_ins=rho/(2*%pi*l)*log(r2/r1);//ohm disp(R_ins/10^6,"Insulation resistance of cable(Mohm) :");