In a wire of circular cross-section with radius r, free electrons travel with a drift velocity V when a current I flows through the wire. What is the current in another wire of half the radius and of the same material when the drift velocity is 2V [MP PET 1997]

• A.                    2I
• B.                                      I
• C.                    \[I/2\]                             
• D.            \[I/4\]