clc; clear all; e = 1.6e-19; // Charge of an electron m = 9.11e-31; // Mass of an electron in Kg rho = 6.8e7 ; // Conductivity of silver in 1/(ohm.meter) at = 107.9; // Atomic weight of copper in gm d = 10.5e3; // Density of silver in Kg per cubic meter N = 6.023e26; // Avagadros number n = (N*d)/at; //Density of electrons disp('atoms/m^3',n,'The density of electrons is') u = (rho/(n*e)); // Mobility of electron disp('(m^2.V)/s',u,'The mobility of electron is')