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+// Example 7.5, page no-163
+clear
+clc
+
+rho=1.54*10^-8//ohm-m
+E=100//V/m
+n=5.8*10^28//m^-3
+e=1.6*10^-19//C
+mu=1/(rho*n*e)
+vd=mu*E
+printf("\nMobility of electron in silvetr is %.4f*10^-3 m^2/v-s\n\nThe drift velocity of the electron in silver is %.5f m/s ",mu*10^3,vd)