1. Limited time only! Sign up for a free 30min personal 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!

Probelm in electrostatiics

  1. Oct 19, 2004 #1
    Hello guys,
    I have a problem with actually starting up this problem (2.6) in "Intrroduction to electrodynamics" Griffiths.


    Find the electric field a distance z above the center of a flat cricular disk of radius R, which carries a uniform surface charge (sigma)?

    I am having problems setting it up especially how 'da' looks like and also the whole integral.

  2. jcsd
  3. Oct 19, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper

    Find the electric field produced by an element of charge [itex]\sigma \rho d\rho d\theta[/itex] at a position along the z-axis. You only need to consider the z-component of field due to the symmetry. Then it's just a matter of integration.
    Last edited: Oct 19, 2004
  4. Oct 22, 2004 #3
    Thank you i get it now Tide.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook