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clear;
clc;
printf("\nEx-6.1\n");
//page no.-178
//given
sigma=6.2*10^-7;......//conductivity of silver in ohm-m
n=5.8*10^28;..........//no. of free electrons per unit volume in m^3
m=9.1*10^-31;.........//mass of electron in kg
e=1.6*10^-19;.........//elementary charge in coulamb
tau=(sigma*m)/(e^2*n).....//relaxation time
printf("\nthe relaxation time is 3.8*10^-14 s\n");
l=2;......//length of silver wire in m
v=40;.....//potential diff. in V
E=v/l.....//electric field in wire in V/m
vd=-(e*E*tau)/m......//drift speed of electron
printf("\ndrift speed of electron is -0.13 m/s");
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