How do you work out the potential difference between two point charges?

I'm having trouble trying to understand what a volt is, and I thought this question might be able to help me understand, so..

For example: If there are 10^6 electrons in one place, and 100 electrons in a different place, what will the potential difference between these two places be.
Also, if a wire was connected between these two places, and this wire had a resistance of 1 ohm, what would the current be?
Thanks

p.s I know this is more of a physics question than an EE question, but I thought id ask here anyway

I'v just found out that the fact that they are point charge's makes this question impossible to answer, so lets say at both sides the electrons are equally spread out in a 1m^3 metal box.

The electric potential created by a point charge Q, at a distance r from the charge (relative to the potential at infinity), can be shown to be

Ve = Q/(4pi*ε0*r)


ε0 ≈ 8.854187817620... × 10−12
Q = point charge/s
r = radial distance from point charge/s (this is a vector so vector algebra is required)

where ε0 is the electric constant (permittivity of free space). This is known as the Coulomb

What is the voltage, depends on where you are relative to the charges. In one case you have 1 million vectors pointed at you some distance away, and in another direction you have 100 vectors pointed at you. The greater the ratio of your distance to the charges, relative to their separation, they they tend to add. If you are between them at a specific distance (very close to the 100 charges they will actually cancel (forces).

OK so you know the places,(distance) you know the charges (Q although you can for simplicity neglect the 100), the above formula tells you the voltage, so it's V/R. I say the 100 is small compared to the 1 million, sort of like static electricity and touching a door knob (resistor in that case is ionized air).

Good luck on your final exam.

Thanks Earl
So are you saying the potential at each point is due to the number of the electrons, AND how they are arranged?