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!

The Electric Field of a Ball of Uniform Charge Density

  1. Feb 26, 2008 #1
    1. The problem statement, all variables and given/known data
    Let E(r) represent the electric field due to the charged ball throughout all of space. Which of the following statements about the electric field are true?

    - E(0) = 0
    - E(Rb) = 0
    - lim(r -->infin.)E(r) = 0
    - The maximum electric field occurs when r = 0.
    - The maximum electric field occurs when r = Rb.
    - The maximum electric field occurs as r -->infin..


    2. Relevant material
    A solid ball of radius Rb has a uniform charge density rho .

    3. Attempt at a Solution
    The true statments that i chose were E(0) = 0, lim(r -->infin.)E(r) = 0, The maximum electric field occurs when r = Rb.
     
    Last edited: Feb 26, 2008
  2. jcsd
  3. Feb 26, 2008 #2

    olgranpappy

    User Avatar
    Homework Helper

    ...attempt at solution?
     
  4. Feb 26, 2008 #3

    pam

    User Avatar

    Your answers are correct.
     
  5. Feb 26, 2008 #4
    thank you
     
  6. Feb 28, 2008 #5
    how would u definte E(r) at distance r > rb?
     
  7. Feb 28, 2008 #6

    pam

    User Avatar

    For r>r_b, E is the same as a point charge.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?