What happens when two points of unequal potential are connected?

When two points of unequal potential are connected, a difference in voltage exists between the two points. This voltage difference creates an electric field that drives the movement of electric charge, resulting in the flow of current through the connecting medium, which could be a conductor like a wire. The flow of current continues as long as there is a potential difference established between these two points.

In practical terms, this principle is fundamental to electrical circuits—current flows from a higher potential to a lower potential until the potentials equalize. Therefore, the response that specifies current flow accurately captures this key concept in electrical theory and practice. Understanding this flow of current is essential for various applications and electrical systems, since it explains how electrical energy is transferred and utilized.