# Calculating the electric potential at the midpoint

## Homework Statement

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

## 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
Mentor
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?
What equation is relevant for finding the electric potential at some distance from a point charge?
V=keq/r

gneill
Mentor
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.