The potential difference between two points in a circuit is called __________.

The potential difference between two points in a circuit is defined as voltage. Voltage is a measure of the electric potential energy per unit charge between those two points. It essentially represents the force that drives electric charges to move through a circuit, resulting in current flow. In simple terms, when there is a difference in voltage, it causes electrons to flow from a region of higher potential to a region of lower potential, which is fundamental for the operation of electrical devices.

Understanding voltage is crucial in the realm of electricity and electronics, as it dictates how much energy is available to perform work in a circuit. It is measured in volts, and the higher the voltage, the more potential energy is available to do work, such as lighting a bulb or powering a motor. In contrast, current refers to the flow of electric charge, resistance is a measure of how much a material opposes that flow, and power is the rate at which energy is used or transferred in the circuit.