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Electric field changing formula variables problem

  1. Jan 26, 2012 #1
    If the electric field is E at a distance d from a point charge, its magnitude will be 2E at a distance?

    ATTEMPT: i think the answer is d/sqrt(2). i used the formula E=(k)(q/d^2) and used test variables. Is this the right answer?
     
  2. jcsd
  3. Jan 26, 2012 #2

    SammyS

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    Yes. That's the right answer.
     
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