Question

# A particle of mass $$m$$ and charge $$q$$ is placed at rest in a uniform electric field $$E$$ and then released. The kinetic energy attained by the particle after moving a distance $$y$$ is :

A
qEy2
B
qE2y
C
qEy
D
q2Ey

Solution

## The correct option is C $$qEy$$K.E acquired $$=$$ work done$$=$$ force$$\times$$ distance $$=qE\times y=qEy$$PhysicsNCERTStandard XII

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