1.

A metal wire is subjected to a constant potential difference When the temperaturre of the metal in it wire increase the drift velocity of the electrons in it .A. increase, thermal velocity of the electrons decreaseB. decrease, thermal velocity of the electrons decreaseC. increase, thermal velocity of the electrons increaseD. decrease, thermal velocity of the electrons increase

Answer» Correct Answer - d
With increase in temperature relaxation line time `t` decrease hence drift velocity `v_(d)` which is directly proportional in relaxation time `(v_(d) = tau)` decrease but thermal velocity increases


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