Question

The electron drift 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.

Answer 1

The correct option is D the electron number density of the conductor is enormous.

The electron number density is approximately ${10}^{29}{m}^{-3}$ per unit volume. It is due to this enormous electron number density we are able to obtain large amount of current in a conductor