How exactly do you find the net force between charges?
I was doing some homework problems, and I came across a couple I didn't know. I then realized I must have screwed up my understanding on electrical forces.
For an electrical force, if there are two protons, the force is k*q1*q2/r^2. The direction is in the opposite direction.
What would be the net force there assuming the charge is e? Would it be 0 since they are in the opposite direction and have equal distances?
My question is it possible to have a third electron and still have the net force equal to 0?