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!

Radial Electric Field

  1. Mar 13, 2012 #1
    1. The problem statement, all variables and given/known data

    Radial component of an electric field near charge 'q'.

    E = (1 / 4∏ε) * (q/r^2)

    Need to find the potential of this which is done through integrating this and taking the negative answer, i.e.

    ΔV = -∫E dr

    This is to be along a radial path towards the charge, starting from infinity to r2.


    3. The attempt at a solution

    So I have

    ΔV = - (q/4∏ε) ∫1/r^2 dr

    As the charge is constant.
    Just unsure on the limits, I'm guessing its ∞ and r2, would that be right?
     
  2. jcsd
  3. Mar 13, 2012 #2

    ehild

    User Avatar
    Homework Helper
    Gold Member

    [tex]\Delta V=V(r)-V(\infty)=-\frac{q}{4\pi \epsilon _0}\int_{\infty}^r{\frac{1}{r^2}dr}[/tex],

    with V(∞)=0


    ehild
     
  4. Mar 13, 2012 #3
    Awesome, cheers mate. I had my limits the wrong way around.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Radial Electric Field
  1. Radial Electric Field (Replies: 5)

Loading...