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EMF around single charge

  1. Sep 9, 2009 #1
    Does a single isolated charge have an electric field?
     
  2. jcsd
  3. Sep 9, 2009 #2

    Dale

    Staff: Mentor

    Yes.
     
  4. Sep 9, 2009 #3
    if so - in terms of classical EMF definitions where do the "field lines" go?
     
  5. Sep 9, 2009 #4

    Born2bwire

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    Science Advisor
    Gold Member

    Out. The electric field is given by Coulomb's law.

    [tex] \mathbf{E} = \frac{q}{4\pi\epsilon_0 r^2} \hat{r} [/tex]
     
  6. Sep 9, 2009 #5

    jtbell

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    Staff: Mentor

    Or in. :smile:

    (depending on whether the charge is + or -, of course)
     
  7. Sep 10, 2009 #6
    so charge DOES have energy? even in the absence for example a voltage gradient?
     
  8. Sep 10, 2009 #7

    Born2bwire

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    Gold Member

    A charge creates its own potential field.
     
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