KCET2008PhysicsCurrent 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
Options
- Aincreases, thermal velocity of the electron decreases
- Bdecreases, thermal velocity of the electron decreases
- Cincreases, thermal velocity of the electron increases
- Ddecreases, thermal velocity of the electron increases
Correct answer
D. decreases, thermal velocity of the electron increases
Step-by-step solution
With rise in temperature the thermal velocity of the electron increases. Relaxation time and hence drift velocity will decrease.