Electrostatic Potential and Capacitance - Result Question 21

23. 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

[1998]

Topic 3: Capacitors, Capacitance, Grouping of Capacitors & Energy Stored in a Capacitor.

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Answer:

Correct Answer: 23. (c)

Solution:

  1. (c) K.E. = Force × distance =qE.y


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