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Homework Help: Deflection of electron in electric field

  1. Feb 28, 2005 #1
    An electron is travelling horizontally at a speed of 8.70 x 10^6 m/s enters an electric field of 1.32 x 10^3 N/C between two horizontal parallel plates as described in the diagram.
    Calculate the vertical displacement of the electron as it travels between the plates.

    How do I go about solving this? Any help would be appreciated since I have a test tomorrow.

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  2. jcsd
  3. Mar 1, 2005 #2
    t=Horizontal length/velocity
    f=electron charge*electic field
    a=f/electron mass

    Then use the formula for x(t) of constant acceleration

    This ignores gravity which almost certainly isn't significant, and relativistic effects which are nearly as insignificant as the velocity<<c.
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