Fri November 25, 2011 By: Mukund Srinivas

Why does electrical conductivity of most metals decrease with increase in temprature

Expert Reply
Fri November 25, 2011
The reason that conductivity decreases with increasing temperature is that the number of imperfection in the atomic lattice structure increases with temperature. So, the increased temperature causes rapid and disturbed electron movement. These imperfections include dislocations, vacancies, interstitial defects and impurity atoms. So, the conductance is hindered.
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