Calculating the electric potential at the midpoint

[rrosa522]

Homework Statement

How do you calculate the electric potential at the midpoint between two point charges?

Homework Equations

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.

 

[gneill]

What equation is relevant for finding the electric potential at some distance from a point charge?

 

[rrosa522]

What equation is relevant for finding the electric potential at some distance from a point charge?

What equation is relevant for finding the electric potential at some distance from a point charge?

V=keq/r

 

[gneill]

V=keq/r

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.