Question
Physics Question on Current electricity
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________.
Fill in the blank with the correct answer from the options given below.
A
Increases, thermal velocity of the electrons decreases
B
Decreases, thermal velocity of the electrons decreases
C
Increases, thermal velocity of the electrons increases
D
Decreases, thermal velocity of the electrons increases
Answer
Decreases, thermal velocity of the electrons increases
Explanation
Solution
As the temperature of the metal increases, the drift velocity decreases due to more frequent collisions, but the thermal velocity of electrons increases. Hence, the correct answer is Option 4.