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!

E-field inside a non-conducting hollow pear.

  1. Jan 23, 2012 #1
    1. The problem statement, all variables and given/known data

    Find the electric field inside a hollow non-conducting pear with a surface charge-distribution (axially symmetric too) of σ(r,θ). The charge density σ is zero at the top of the pear, and 600 C/m^2 at the bottom.

    2. Relevant equations

    I'm not sure how to approach the problem ... maybe some application of Laplace's equation.

    3. The attempt at a solution

    The electric field at any point inside the pear will be the superposition of x,y, and z fields. I assume that we can use symmetry about the z-axis to our advantage.
     
  2. jcsd
  3. Jan 23, 2012 #2
    Nevermind, it's just a simple application of gauss' law on the inside of the object yielding E=0 because there is no enclosed charge. (And E-z is non-zero I believe.)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook