Potential difference is the difference in electric potential between two points, equal to the work per unit charge to move between them, commonly called voltage.
Potential difference is the difference in electric potential between two points in a circuit, equivalent to what is commonly called voltage. It represents the energy per unit charge required to move a charge between the two points, and it is this difference that drives current to flow through a conductor connecting them. Potential difference is measured in volts.
Because potential difference is what causes current to flow, it is fundamental to how circuits operate. The relationship among potential difference, current, and resistance is described by Ohm's law, and understanding potential difference is essential to analyzing and designing electrical systems.
In commercial and industrial systems, potential difference, or voltage, determines the insulation and ratings a cable must have. Cable is selected to withstand the potential differences it will experience, ensuring safe and reliable operation.
Because potential difference is what causes current to flow, it is fundamental to circuit operation, and its relationship to current and resistance through Ohm's law makes understanding it essential to analyzing and designing electrical systems, including selecting cable to withstand the voltage.
Recognizing how potential difference drives current and sets insulation requirements helps illustrate why cable is selected to withstand the voltage of an application for safe, reliable operation.
At Windy City Wire, the focus on properly rated low-voltage cable connects directly to the potential differences that circuits present. Supplying cable with insulation suited to the voltage helps ensure dependable performance under the actual electrical conditions of an application.
Commonly called voltage