When current I flows through a wire, the drift velocity of the electrons is v. When current 2I flows through another wire of the same material having double the length and area of cross-section, the drift velocity of the electrons will be

Options

A. `(v)/(4)`
B. `(v)/(2)`
C. v
D. 2v

Answer

C

Explanation

`v_(d)=(I)/(nAe), v_(d)^(.)=(2I)/((2A)n e)=v_(d)`