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+
+//Variable declaration
+mewe=0.14; //mobility of electrons(m**2/Vs)
+mewh=0.05; //mobility of holes(m**2/Vs)
+e=1.6*10**-19;
+ni=1.5*10**16; //intrinsic concentration(per m**3)
+A=28.09; //atomic weight
+D=2.33*10**3; //density(kg/m**3)
+Na=6.025*10**26; //avagadro number
+
+//Calculation
+N=Na*D/A; //number of atoms(per m**3)
+n=N/10**8; //electron concentration(per m**3)
+p=ni**2/n; //hole concentration(per m**3)
+sigma=e*((n*mewe)+(p*mewh)); //conductivity(per ohm m)
+
+//Result
+printf('conductivity is %0.3f per ohm m\n \n',(sigma) ) \ No newline at end of file