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Electric Field strength between 3 charges and directions

  1. Mar 27, 2014 #1
    1. The problem statement, all variables and given/known data
    Three point charges lie along a straight line as shown in the figure below, where
    q1 = 6.36 µC, q2 = 1.57 µC and q3 = −1.82 µC.
    The separation distances are d1 = 3.00 cm and d2 = 2.00 cm.
    Calculate the magnitude and direction of the net electric force on each of the charges.

    AZOBajX.gif

    2. Relevant equations



    3. The attempt at a solution
    I think I have to use vectors but I don't know how...
     
  2. jcsd
  3. Mar 27, 2014 #2

    BvU

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    Well, what equations do you have at hand to tackle this problem ?
     
  4. Mar 27, 2014 #3
    I'm not very good with electricity...

    F = Eq
    E = -(dv/dx)
     
  5. Mar 27, 2014 #4

    BvU

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    So you still need an expression for either V or ##\vec E##, right ?
     
  6. Mar 27, 2014 #5
    I have been stuck on this question making no progress. Please help me go somewhere...
     
  7. Mar 28, 2014 #6

    BvU

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