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: Centre of charge ?

  1. Feb 28, 2006 #1
    if i have 3 unequal point charges located on the vertices of an equilateral triangle then can i assume the whole charge to be concentrated at one point to represent the whole system ? i.e one can assume the entire charge to be concentrated at that point for the purpose of calculating the electric field intensity ? can we derive a general expression for coordinates of center of charge like center of mass ?
     
  2. jcsd
  3. Feb 28, 2006 #2

    Astronuc

    User Avatar
    Staff Emeritus
    Science Advisor

    The electric field of a collection of individual charges is the vector sum of the electric field of each charge.

    At large distances, the electric field approaches that which would be given by a point charge of the magnitude of the total charge.

    Yes - a coordinate system is a key part.
     
  4. Feb 28, 2006 #3
    thanx a lot sir ..........
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook