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//Example 2_3_u2
clc();
clear;
//To calculate the drift velocity and their mobility
rowm=2700 //units in kg/m^3
NA=6.023*10^23 //Avagadro number
MA=26.98*10^-3 //units in Kg
n=(rowm*NA)/MA //units in m^-3
row=2.52*10^-6 //units in ohm metre
e=1.6*10^-19 //units in coulombs
u=(row/(n*e))*10^13 //units in meter^2 V^-1 s^-1
E=50 //units in Volt/meter
vd=u*E //units in meter/sec
printf("The drift velocity of conduction electrons is vd=%.4f meter/sec",vd)
printf("\nMobility of conduction electrons is n=")
disp(n)
printf("meter^-3")
//Given in text book mobility is n=18.07*10^28 meter^-3 but the correct answer is n=6.027D+28 meter^-3
//Given in text book vd=0.066 meter/sec which is wrong and the correct one is vd=0.1307 meter/sec
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