1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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 feild sketch

  1. Feb 19, 2010 #1
    1. The problem statement, all variables and given/known data
    Sketch 2 diagrams 1 showing Ex against x and 1 showing Fx against x

    2. Relevant equations

    3. The attempt at a solution
    I have drawn a graph showing potential difference against x and have been asked to produce a sketch showing Ex and Fx relating to this graph but Im unsure how to do this, will my sketch of Ex be going from positive to negative if my pd went from neagative to positive
    Thanks in advance cerium
  2. jcsd
  3. Feb 19, 2010 #2


    User Avatar
    Homework Helper
    Gold Member

    What is the equation that determines the electric field from its potential? What does that equation reduce to when the potential depends only on [itex]x[/itex]?
  4. Feb 19, 2010 #3
    Equation relating electric field and potential is Ex= -dV(r)
    if it just relies on x then is it just an inverse sketch of the pd graph
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook