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+//Exa 2.24.2
+clc;
+clear;
+close;
+//Given data
+Mu_e = 7.04 * 10^-3;// in m^2/v-s
+m = 9.1 * 10^-31;
+E_F = 5.5;// in eV
+n = 5.8 * 10^28;
+e = 1.6 * 10^-19;// in C
+Torque = (Mu_e/e) * m;// in sec
+disp(Torque,"Relaxation Time in sec is ");
+Rho = 1 /(n * e * Mu_e);// in ohm-m
+disp(Rho,"Resistivity of conductor in ohm-m is ");
+V_F = sqrt((2 * E_F * e)/m);// in m/s
+disp(V_F,"Velocity of electrons with fermi-energy in m/s is");
+