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Homework Help: Electric Field Vector

  1. Nov 2, 2015 #1
    1. The problem statement, all variables and given/known data
    From attachment R=-xaa-yay+3az

    2. Relevant equations

    3. The attempt at a solution
    I see 4 different values, one for each quadrant.
    2nd. quadrant

    Where did I go wrong in determine value of R?


    Attached Files:

  2. jcsd
  3. Nov 2, 2015 #2
    The equation they gave applies to all 4 quadrants. It is just equal to minus a position vector drawn from the origin to any arbitrary point (x,y,-3) on the square sheet. The 3 unit vectors in their equation are pointing in the 3 positive coordinate directions.

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