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clear
//
//
//

//Variable declaration
e=1.6*10**-19    //charge(c)
ni=1.5*10**16    //particle density(per m**3)
mew_e=0.13       //electron mobility(m**2/Vs)
mew_h=0.05       //hole mobility(m**2/Vs)

//Calculation
sigma=ni*e*(mew_e+mew_h)       //conductivity(per ohm m)

//Result