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Homework Help: Strength of Electric Field with a point charge

  1. Sep 29, 2011 #1
    A +11 nC charge is located at the origin.

    What is the strength of the electric field at the position x,y (-5cm, 5cm) ?

    I would think you would do this but when I try it I get the wrong answer

    for x axis - E=k|q|/r2
    For y axis - E=k|q|/r2

    Then [itex]\sqrt{}Ex^2 + Ey^2[/itex]
    Last edited: Sep 29, 2011
  2. jcsd
  3. Sep 29, 2011 #2


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    What is "a 11 charge"?
    At what position?

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