# From where do charges come to equify the potential of the sphere having less potential- through the wire or the sphere having higher potential?

Say, you have two different charged spheres having different potentials on their surface. Now you connect two of them by a wire. So, after sometimes, both of them will have the same potential on their surfaces. That means some charge has moved to the sphere which had lesser potential. My question is, do these charges came from the wire or the other sphere which had higher potential?

$$V = k\frac{Q}{r}$$
so the voltage $V$ is proportional to the charge $Q$. Since the potential of the larger sphere decreases that must mean the charge on the larger sphere decreases. The same argument tells us that the charge on the smaller sphere must increase.
• I think I have got my answer. Since there is lower potential & $E = -\nabla\phi$, electric field must have incited the current which ultimately increased the charge of the concerned sphere to make the spheres equipotential. Just want to know, does it apply to any other (weired & quaint) shaped conductor? Thanks:) – user36790 Jul 9 '15 at 12:10