What is the term used to describe the difference in electrical charge between two points in a circuit?

The term that describes the difference in electrical charge between two points in a circuit is voltage. Voltage represents the potential difference that drives electric current through a circuit, acting as the force that pushes charged electrons from one point to another. It is measured in volts and is a crucial aspect of electrical circuits, as it indicates how much potential energy exists per unit charge at those points.

Current refers to the flow of electric charge, power is the rate at which energy is transferred or converted, and resistance measures the opposition to current flow in a circuit. Understanding voltage is essential for analyzing circuits, as it directly relates to how much current will flow given a particular resistance according to Ohm's Law. Thus, the concept of voltage is foundational in both theory and practical applications of electrical engineering.