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!

Electrostatic force on a parallel plate

  1. Feb 4, 2013 #1
    I'm tasked to find the force one parallel plate exert on the other plate in a capacitor.

    somehow the force isn't just F=qE, where E=Q/2εA

    What am I missing here?
     
  2. jcsd
  3. Feb 4, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Erm - direction?

    You can check by using another method ... i.e. Coulombs law for a point charge and add them up, or start with the electric field due to a sheet of charge by itself.
     
  4. Feb 5, 2013 #3
    i mean, my solution is lacking so coefficient.
    based on my (confused and vague) understanding, the electric field is actually 1/2 E or something?
     
  5. Feb 5, 2013 #4

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Is it? Why not calculate the field?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook