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Homework Help: Electric field of a Dipole

  1. Oct 17, 2009 #1
    1. The problem statement, all variables and given/known data

    Determine the E-field from an electric dipole with charges Q and –Q, at a distance d, assuming the potential V is known. (Hint: Use gradient in spherical coordinates and place the dipole in a suitable way)

    2. The attempt at a solution

    Since no other charges are mentioned, I'm assuming I can use superposition for this, so:

    http://img26.imageshack.us/img26/2528/dipole.jpg [Broken]

    What I need help with is figuring out ^R, after which I'll simply add the two expressions together to find the final result. This completely skips using V for any of the steps, but I'm pretty sure the teacher won't dock us for that.
    Last edited by a moderator: May 4, 2017
  2. jcsd
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