A particle of mass m carrying charge q is kept are rest in a uniform electric field E and then released. The kinetic energy gained by the particle, when it moves through a distance y is

Options

A. a)`1/2 qEy^2`
B. b)`qEy`
C. c)`qEy^2`
D. d)`qE^2y`

Answer

B

Explanation

Kinetic energy=work done
=F.D
`=qE times Y`
=qEY