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The resistance of a metal wire increases with increasing temperature on account of 
 
Option: 1 decrease in free electron density.
 
Option: 2 decrease in relaxation time.
 
Option: 3 increase in mean free path.
 
Option: 4 increase in the mass of electron

Answers (1)

The resistance of a metal wire increases with increasing temperature on account of decrease in relaxation time.
 

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Safeer PP

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