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clear
//
//
//
//Variable declaration
e=1.6*10**-19
Eg=0.72 //band gap(eV)
k=1.38*10**-23 //boltzmann constant
T1=293 //temperature(K)
T2=313 //temperature(K)
sigma1=2 //conductivity(mho m-1)
//Calculation
x=(Eg*e/(2*k))*((1/T1)-(1/T2))
y=(x/2.303)
z=(log10(sigma1))
log_sigma2=y+z
sigma2=10**log_sigma2 //conductivity(mho m-1)
//Result
printf("\n conductivity is %0.2f mho m-1",sigma2)
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