A potential difference is applied an the ends ofa metallic wire. If the potential difference is doubled, the drift velocity

Options

A. will be doubled
B. will be halved
C. will be quadrupled
D. will remain unchanged

Answer

A

Explanation

`I=n A ev_(d)`
`v_(d)=(I)/(n Ae)" " [ :. I=(V)/(R)]`
`v_(d)=(V)/(n AeR)`
`:. v_(d)xx V`, if V is doubled `v_(d)` is also doubled.