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Magnitude and Direction of Electric Point Charges

  1. Aug 28, 2013 #1
    1. 1: Suppose eight identical point charges q are placed at the corners of a cube with side length L.
    Find the magnitude and direction of the electric force produced exerted by these charges on another
    charge q at the center of a face of the cube.

    2. Relevant equations

    3. So far I've drawn a picture of the situation in 3D, but I'm not sure how to proceed
    from there.
  2. jcsd
  3. Aug 29, 2013 #2

    Andrew Mason

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    Can you draw a vector representing the force of one charge on the charge at the centre? (hint: can you apply Coulomb's law to determine the magnitude and direction of the force?). Do that for all 8 charges and add up the vectors.

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