1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Method of images

  1. Nov 1, 2013 #1
    Hello, I am stuck with this one. Your help/comments would be most appreciated.

    A charge "+Q" lies at a distance "d" above an infinitely large conducting plane. Applying the method of images, i found the right result that the total charge of the infinite plane is "-Q" and that the stored electric energy is:
    Since the stored electrostatic energy also satisfies:

    it seems that the capacitance of the system would be negative which must be non sense. Therefore the charge above the plane is *not* a capacitor.

    Is this correct or am i missing something?
    Thanks for your help
  2. jcsd
  3. Nov 1, 2013 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    And the question was ... ?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted