What term describes the difference in potential between two conducting objects?

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The key idea is the driving force for current: the potential difference between two points. This difference tells you how much energy per unit charge would be gained or lost moving from one conductor to the other, and it’s what we call voltage. Electrical potential describes the energy per unit charge at a location, and when you’re looking at two points, the important quantity is the difference between those potentials—the electrical potential difference, also known as voltage. Among the options, this term best matches the concept of a potential difference, while the other terms describe different properties: capacitance relates to storing charge, inductance to energy in a magnetic field from changing current, and resistance to opposition to current flow.