Compare the electrical conductivity of pure germanium at -40^(@)Cand+100^(@)C. The activation energy for germanium is 0.72 eV

Compare the electrical conductivity of pure germanium at -40^(@)Cand+1

1.	Compare the electrical conductivity of pure germanium at -40^(@)Cand+100^(@)C. The activation energy for germanium is 0.72 eV
Answer» Solution :The mean free path of the electron is much LESS dependent on the TEMPERATURE than the exponential term, therefore the temperature dependence of the factor B can be NEGLECTED in the FIRST approximation. We have `gamma_(2)/gamma_(1)=(e^(-Deltaepsi//kT_(2)))/(-Deltaepsi//kT_(1))=exp{(Deltaepsi(T_(2)-T_(1)))/(kT_(1)T_(2))}`

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Compare the electrical conductivity of pure germanium at -40^(@)Cand+100^(@)C. The activation energy for germanium is 0.72 eV

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