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Apr 13, 2017 at 12:40 history edited CommunityBot
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May 24, 2013 at 14:27 history edited Emilio Pisanty CC BY-SA 3.0
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May 23, 2013 at 18:34 comment added Emilio Pisanty Yes. You can always define it, of course, and it is useful in that it gives the subleading term of the multipole expansion of that charge's field when it is displaced from the origin.
May 23, 2013 at 18:29 comment added Groda.eu Does it really make sense to talk about the dipole moment of a single charge?
May 22, 2013 at 21:23 history answered Emilio Pisanty CC BY-SA 3.0