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.

Options

A. Both (A) and (R) are true and (R) is the correct explanantion 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

C