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A particle of mass m carrying charge q is kept at 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
  • a)
  • b)
    qEy
  • c)
    qEy2
  • d)
    qE2y
  • e)
    q2Ey
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A particle of mass m carrying charge q is kept at rest in a uniform el...
The force acting on the charge, F = qE 
The work done by the force, W = Fy = qEy
This work done same as the increase K.E.
Therefore the KE of the particle will be,
K = qEy
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A particle of mass m carrying charge q is kept at rest in a uniform electric field E and then released. The kinetic energy gained by the particle, when it moves through a distance y isa)b)qEyc)qEy2d)qE2ye)q2EyCorrect answer is option 'B'. Can you explain this answer?
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