Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Gauss's Law

  1. Apr 2, 2008 #1
    1. The problem statement, all variables and given/known data
    On a clear, sunny day, a vertical electrical field of about 116 N/C points down over flat ground. What is the surface charge density on the ground for these conditions?


    2. Relevant equations



    3. The attempt at a solution
    116*8.83e-12= 1.0266e-9
     
  2. jcsd
  3. Apr 2, 2008 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    That's not much of an explanation of what you did. The interior of the ground is approximately a conductor. You want the effect of the surface charge layer to produce 116V/m above the ground and 0V/m below it when added to the external field.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook