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Question: Answered & Verified by Expert
A positively charged particle is released from rest in a region of uniform electric fiel(d) The particle will move
PhysicsElectrostaticsCOMEDKCOMEDK 2012
Options:
  • A with constant speed
  • B with constant velocity
  • C with constant acceleration
  • D with variable acceleration
Solution:
1346 Upvotes Verified Answer
The correct answer is: with constant acceleration
The force on a charged particle in an electric field is
Also,
$F=q E$
$F=m a$
$\Rightarrow \quad a=\frac{F}{m}=\frac{q E}{m}$
As $q$ and $m$ are constant for a positively charged particle and the electric field is also uniform. So, the particle move with constant acceleration.

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