Question

A metal wire is subjected to a constant potential difference. When the temperature of the metal wire increases, the drift velocity of the electron in it

• A. Increases, thermal velocity of the electron decreases
• B. Decreases, thermal velocity of the electron decreases
• C. Increases, thermal velocity of the electron increases
• D. Decreases, thermal velocity of the electron increases

Answer 1

Answer: (C)

Increases, thermal velocity of the electron increases

As the temperatures increases ,the KE of electron increases ,so the thermal velocity will increase .Due to increase in number of collision the drift velocity will decrease .