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Equipotential Surfaces Question

  1. Feb 5, 2008 #1
    [SOLVED] Equipotential Surfaces Question

    If the radius of the equipotential surface of point charge is 14.3 m at a potential of 2.20 kV, what is the magnitude of the point charge creating the potential?








    have V = [1/4πεo] [q/r]
    Given that,
    V = 2.20kV = 2200V
    r = 14.3m
    Therefore,
    q = 2200 x 14.3
    9.0 x 10^9
    = 3.495 x 10-6μC


    Correct??? Not correct??? Please help me!
     
  2. jcsd
  3. Feb 6, 2008 #2

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    Methot is correct. Final ans not correct.

    (Do your own arithmetic.)
     
  4. Feb 6, 2008 #3
    What did I do wrong? Why is my final answer incorrect?
     
  5. Feb 6, 2008 #4

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    What is your final unit, microcoulomb or coulomb?
     
  6. Feb 6, 2008 #5
    C (3.5 x10^-6 C?)
     
    Last edited: Feb 6, 2008
  7. Feb 6, 2008 #6

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