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Homework Help: Charges/electric field

  1. Jan 28, 2004 #1
    Suppose that the strength of the electric field about an isolated point charge has a certain value at a distance of 1 m. How will the electric field strength compare at a distance of 2 m from the point charge?

    i think the field strength will be 1/4 at twice the distance. am i correct?
  2. jcsd
  3. Jan 28, 2004 #2

    Doc Al

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    Staff: Mentor

    Right. The field from a point charge follows an inverse square law: [itex]E = \frac{kq}{r^2}[/itex]
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