Volt is a unit of measurement for electric potential, named after the Italian scientist Alessandro Volta. It quantifies the difference in electric potential energy per unit charge between two points in an electric circuit. Higher voltages can drive more current through a circuit, making it essential for understanding how electrical systems operate. In practical terms, batteries are often rated in volts, indicating how much electrical energy they can provide. For example, a standard household outlet in many countries supplies 120 volts or 240 volts, which powers various appliances and devices. Understanding volts is crucial for safely working with electricity.