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Question 31456
JEE Physics · Hard

Electrostatics: Potential Energy MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Potential EnergyHardQuestion 31456

Question

A charge q is released from rest in a field E. It moves a distance d. Kinetic energy gained:
  1. A
    qEd
    Correct
  2. B
    q²Ed
  3. C
    qE/d
  4. D
    qEd/2

Correct answer

qEd

Explanation

Work done by field = force × distance = qE × d = qEd. By work-energy theorem, this equals kinetic energy gained.

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