Question

Assertion : Current flows in a conductor only when there is an external electric field within the conductor
Reason: The drift velocity of the electrons is directly proportional to the electric field

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

Current flows when there in P.D.
The presence of P.D implies the presence of Electric field.
Drift velocity $\propto$ Electric field.