1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Very Annoying Problem

  1. May 14, 2008 #1
    This is killing me. I have an electrical charge in the air and below it I have a container filled with water. How do I calculate the electric field generated by the charge on the bottom of the cointainer? Bear in mind the electrostatic constant in water is different than from air.
  2. jcsd
  3. May 15, 2008 #2


    User Avatar

    Assuming the surface of the water is like an infinite plane, this is a standard image problem treated in most textbooks.
  4. May 15, 2008 #3
    Could you ellaborate, then?
  5. May 15, 2008 #4


    User Avatar

    I can't go through the whole method of images.
    You may have to look at a book.
  6. Jun 13, 2008 #5


    User Avatar
    Science Advisor
    Homework Helper

    smells like homework?
  7. Jun 13, 2008 #6
    Excuses me, pam (or others), but doesn't the method of images require that the boundary region be a (grounded) perfect conductor?

    Treating the problem in a brute-force manner (Gauss' Law, Cartesian coordinates), this doesn't sound TOO bad. You just need to invoke some pretty clever trigonometry to account for the surface of the water.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Very Annoying Problem
  1. Very annoying question (Replies: 2)