Q. On increasing the temperature of a conductor, its resistance increases because the
A) Relaxation time increases
B) Mass of electron increases
C) Electron density decreases
D) Relaxation time decreases
Explanation
(d) Resistance of a conductor, $R = \frac{m}{ne^{2}\tau}\frac{l}{A}$
Where the symbols have their usual meaning
As the temperature increases, the relaxation time $\tau$ decreases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.