Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Gaussian Units: Electric Field

  1. Oct 13, 2009 #1
    I am stuck with Gaussian units. If the field in vacuum is

    [tex] E = \frac{Q}{r^2} [/tex]

    Is the field in a dielectric

    [tex] E = \frac{Q}{\epsilon_r r^2} [/tex]

    , or is it unchanged?
  2. jcsd
  3. Oct 13, 2009 #2


    User Avatar
    Science Advisor
    Gold Member

    The latter is the correct equation. In gaussian units, free-space epsilon is unity, this is why I prefer MKS units since all the unities in natural units sometimes hide these kind of relationships.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Gaussian Units: Electric Field
  1. Electric field (Replies: 3)

  2. Electric fields (Replies: 7)