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Calculating the electric potential at the midpoint

  1. May 16, 2016 #1
    1. The problem statement, all variables and given/known data
    How do you calculate the electric potential at the midpoint between two point charges?
    2. Relevant equations


    3. The attempt at a solution
    I was asked to find the electric potential at the midpoint of every side of an equilateral triangle. I have no clue how I could do this find the midpoint.
     
  2. jcsd
  3. May 16, 2016 #2

    gneill

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    Staff: Mentor

    What equation is relevant for finding the electric potential at some distance from a point charge?
     
  4. May 16, 2016 #3
    V=keq/r
     
  5. May 16, 2016 #4

    gneill

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    Staff: Mentor

    Okay, I presume you mean

    ##V = k\frac{q}{r}## where k is Coulomb's constant.

    So what are the distances to each charge from one of the midpoints of a side of the triangle? Make a diagram and use a bit of geometry.
     
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