1. The problem statement, all variables and given/known data Three charges are placed at the corners of an equilateral triangle with sides of length 2.0 m. Determine the electric potential at the midpoint of each side of the triangle. The three charges at the corners of the triangle at +4.0 X 10^-6 C, +2.0 X 10^-6 C, and -4.0 10^-6 C. 2. Relevant equations V=kq/r 3. The attempt at a solution I tried finding the electric potential of each of the charges to the midpoint, meaning that the r=1.0 m, and then adding the electric potential on either side of the midpoint together... but it's not working... For example: For the midpoint betweeen the charges +4.0 X 10^-6 C and +2.0 X 10^-6 C, i found the electric potential from the midpoint to the charge +4.0 X 10^-6 C, in which i got 36000 V and then i found the electric potential from the midpoint to the charge of +2.0 X 10^-6 C, and i got 18000 V. I added these two values together... but i didn't get the right answer. The answers for the three midpoints of the triangle are 1.0 X 10^4 V, 3.3 X 10^4 and 2.8 X 10^3 V. Can someone please help?