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!

What is the magnitude of charge inside the box

  1. Sep 7, 2006 #1
    have a box that is 4.15 cm on each side. Using a probe I measure on two opposite sides of the box and find a nearly uniform, inward-oriented, perpendicular component of the field with the magnitude of 18.3 N/C. What is the magnitude of charge inside the box?
     
  2. jcsd
  3. Sep 7, 2006 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Hint: Use Gauss's law.
     
  4. Sep 9, 2006 #3
    like this?

    so do I set it up like: 18.3 = q/(2Eo). Solving for q and then that would give me one unit and then I would multiply by the volume of the cube (.00414^3)?????
     
  5. Sep 10, 2006 #4

    Doc Al

    User Avatar

    Staff: Mentor

    To find the charge within the box using Gauss's law, first calculate the flux through each side of the box. The total flux will allow you to calculate the total charge. See this for more on Gauss's Law.

    Is the field uniformly inward on all sides of the box? Or just two?
     
  6. Sep 10, 2006 #5
    Got it

    Got it Thanks Doc.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?