Q. The electron dirft speed is small and the charge of the electron is also small but still, we obtain large current in a conductor. This is due to
A) The conducting property of the conductor
B) The resistance of the conductor is small
C) The electron number density of the conductor is small
D) The electron number density of the conductor is enormous
Explanation
(d) In a conductor, the electron number density $ie$, number of electrons per unit volume of a conductor is very large $( \approx 10^{28}m^{- 3})$, so large current in a conductor is obtained irrespective of their small drift speed.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.