What is the unit for potential difference?

The unit for potential difference is volts (V). Potential difference, often referred to as voltage, measures the amount of energy per unit charge that is available to move charge from one point to another in an electrical circuit. It indicates how much energy is provided to the charges, enabling them to do work as they move through the circuit.

Understanding that volts relate specifically to this concept helps in grasping how electrical systems function, as it reflects the driving force that pushes electric current through circuit components. In contrast, amperes (A) represent the flow of electric current, ohms (Ω) measure resistance in a circuit, and joules (J) quantify energy. Each of these units plays a crucial role in electrical science, but when specifically discussing potential difference, volts is the correct and relevant unit.