What is voltage?

Voltage is defined as the electrical potential difference between two points in a circuit. It represents the force that pushes electric charges through a conductor, enabling them to flow and do work, such as lighting a bulb or powering a device. This difference in electrical potential occurs because of varying energy levels associated with the positions of charged particles.

The concept of voltage is fundamental in understanding how electrical systems operate because it indicates the energy per unit charge available to move electrons from one point to another. When voltage is applied across a circuit, it is this potential difference that drives the current.

Understanding voltage is crucial for analyzing and designing electrical circuits, as it helps determine how much current will flow based on the resistance of the circuit components (according to Ohm's Law). Thus, it is essential to recognize that voltage serves as the driving force that moves electrical charges through a circuit.