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Voltage drop

The term voltage drop as used in electrical engineering describes a difference in potential between two points of an energised electrical resistor. This corresponds to the loss of voltage, across the length of an electrical line, between the terminals of the power supply and the electrical load. The extent of the voltage drop depends on the electrical resistance encountered and, thus, the diameter of the line.

See Fig. 1 Voltage drop

Voltage drop: Voltage drop in an electrical line Fig. 1 Voltage drop: Voltage drop in an electrical line