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Electric , ppppp

  1. Mar 5, 2008 #1
    Electric ,plz helpppppp

    At a distance of 1.60m from a point charge of +2.00 x 10 -6 C, there is an equipotential surface. At greater distances there are additional equipotential surface. The potential difference between any two successive surfaces is 1.00 x 10 3 V . Starting at a distance of 1.60 m and moving radially outward , how many of the additional equipotential surfaces are crossed by the time the electric field has shrunk to one half its initial value? Do not include the starting surface.
  2. jcsd
  3. Mar 6, 2008 #2
    Any ideas on how to go about it?
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