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!

Charge Density from E-field

  1. Apr 4, 2014 #1
    1. The problem statement, all variables and given/known data
    I have a function for an E-field [tex]E(x,y,z,t)=E_o\cos(k(x-ct))\hat j[/tex] and I need to find the charge density....
    2. Relevant equations

    [tex]\vec \nabla \cdot\vec E=\frac{\rho}{\epsilon_o}[/tex]


    3. The attempt at a solution


    When I compute the dot product of gradient operator with the E-field I get zero since the only "term" in the factor is in the y direction, but it also does not have any variation with y so is the charge density in this region of space just zero?
     
  2. jcsd
  3. Apr 4, 2014 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    I would agree with that.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted