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Question

An electron moves with a velocity v in an electric field E. If the angle between v and E is neither 0 nor π, then the path followed by the electron is a(an):
  1. circle
  2. straight line
  3. ellipse
  4. parabola

A
ellipse
B
parabola
C
straight line
D
circle
Solution
Verified by Toppr

The perpendicular component of velocity is given by:
vy=vsinθ
Now in the X direction, the electron experiences a force of E(e)
So, F=eE
or, a=Eem

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