How can voltage be defined in a simple term?

Voltage can be understood as the electrical potential difference between two points in a circuit. It is the driving force that pushes electric charge to flow through a conductor, such as a wire. This potential difference is what enables current to flow, much like pressure in a water system pushes water through pipes.

In electrical terms, one point has a higher potential energy than another, and the voltage is the measure of that difference in potential energy. When a voltage is applied across a circuit, it creates an electric field that influences the movement of charged particles, resulting in an electric current. Thus, defining voltage as electrical potential difference captures its fundamental role in electrical circuits and highlights its importance in understanding how electricity works.