Question:medium

A charged particle of mass \(m\) and charge \(q\) is released from rest in an electric field of magnitude \(E\). The kinetic energy of the particle after time \(t\) second is

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Start from \(F = qE\), find \(a\), then \(v = at\) (from rest), and \(KE = \frac{1}{2}mv^2\).
Updated On: Apr 8, 2026
  • \(\dfrac{qEt}{2m}\)
  • \(\dfrac{q^2E^2t^2}{2m}\)
  • \(\dfrac{q^2E^2t^2}{m}\)
  • \(\dfrac{q^2E^2t^2}{2m}\)
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The Correct Option is B

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