Question

Assertion : A current flows in a conductor only when there is an electric field within the conductor.

Reason : The drift velocity of electron in presence of electric field decreases.

• A. Both (A) and (R) are true and (R) is the correct explanation of A
• B. Both (A) and (R) are true but (R) is not the correct explanation of A.
• C. (A) is true but (R) is false
• D. (A) is false but (R) is true

Answer 1

The correct option is C (A) is true but (R) is false

Current flows when there in P.D.

The presence of P.D implies the presence of Electric field.

Drift velocity $\propto$ Electric field.