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clc//
//
//
//Variable declaration
d=8.92*10^3; //density(kg/m^3)
rho=1.73*10^-8; //resistivity of copper(ohm m)
NA=6.02*10^26; //avagadro number(per k mol)
Aw=63.5; //atomic weight
m=9.1*10^-31; //mass(kg)
e=1.6*10^-19; //charge(coulomb)
//Calculation
n=d*NA/Aw; //density of electrons
mew=1/(rho*n*e); //mobility of electrons(m^2/Vs)
t=m/(n*e^2*rho); //average time of collision(s)
//Result
printf("\n mobility of electrons is %0.3f *10^-2 m V-1 s-1",mew*10^2)
printf("\n average time of collision is %0.2f *10^-14 s",t*10^14)
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