Volt Direct Current (Vdc)

In electronics, direct current (DC) is the unidirectional flow of electric charge. A DC voltage is produced when the flow of charge is constant in one direction. The standard unit of measure for DC voltage is the volt. Direct current flows in a conductor such as a wire when there is a potential difference between the two ends of the conductor. The potential difference creates an electric field that forces electrons to flow through the conductor from the negative to the positive terminal.

The most common source of DC voltage is a battery. When connected to a circuit, batteries provide a steady flow of electrons that can power devices such as flashlights and computers. Other sources of DC voltage include solar cells and generators. DC voltage can be either positive or negative.

The magnitude of the voltage depends on the amount of charge flowing through the circuit and the resistance of the circuit. If there is more charge flowing through the circuit, or if the resistance is lower, then the voltage will be higher.