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!

Force on an electron between two parallel plates

  1. Apr 3, 2012 #1
    1. The problem statement, all variables and given/known data
    Two parallel plates are separated by 10.0cm and a potential difference of 500.0V is maintained between them. What is the force on an electron between the plates?


    2. Relevant equations



    3. The attempt at a solution
    E = F / q = kQ / r2
    V = kQ / r = Er = Fr / q
    F = Vq / r = 500.0 * e / 0.100 = 8 * 10-16

    The actual answer is 8 * 10-18
    Where did my calculation go wrong?
     
  2. jcsd
  3. Apr 3, 2012 #2
    I got the same answer as yourself.Don't forget the units.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook