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Homework Help: Coulombs Law Question

  1. Sep 11, 2006 #1
    Hello,

    I was wondering if we had a square with side length a and charges q. What would be the electric field at a corner? I can work this out by breaking stuff into components but I wondered if there was an easier way using very basic linear algebra. What about a cube? In other words are there any tricks to make it easier rather than just break it into components, add them, and find the resultant?
     
  2. jcsd
  3. Sep 11, 2006 #2

    berkeman

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    Staff: Mentor

    It's not clear from your problem statement where the charge is with respect to the square, but my guess is that there is not a simple trick available. Adding components is something you will do a lot.
     
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