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!

Electric Field value at distances from charge or plate.

  1. Feb 19, 2010 #1
    1. The problem statement, all variables and given/known data
    If given a single charge (q), how would one determine the Electric Field (E) value at given distances?

    How about from a plate? Would the given surface area play apart here?

    2. Relevant equations
    F=K(q1)(q2)/r^2, K= Coulomb's Constant = 9e^9 Nm^2/C^2, F=Eq, PE=qV, V=Ed


    3. The attempt at a solution
     
  2. jcsd
  3. Feb 19, 2010 #2
    1. The problem statement, all variables and given/known data
    If given a single charge (q), how would one determine the Electric Field (E) value at given distances?

    How about from a plate? Would the given surface area play apart here?

    2. Relevant equations
    F=K(q1)(q2)/r^2, K= Coulomb's Constant = 9e^9 Nm^2/C^2, F=Eq, PE=qV, V=Ed


    3. The attempt at a solution
    Possibly E=Kq/r^2 for the single charge? Still working on the capacitor.
     
  4. Feb 19, 2010 #3

    ideasrule

    User Avatar
    Homework Helper

    Yes, E=kq/r^2 for a single charge. Where does it say that the plate is a capacitor?
     
  5. Feb 20, 2010 #4
    Two plates are esentially a capacitor. Top plate Posotive and the Bottom plate Negative. Is there an equation to determine the Electric Field value (E,volts) at points between the plates? And what if a specific charge were placed at those points. Is there an equation to determine Electrostatic Force? Or would we just use F=k(q1)(q2)/r^2 with q1 being the plate charge and q2 being the individual charge?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook