Voltage drop is defined as the decrease in electrical potential along a current’s path within an electrical circuit—simply put, a “drop in voltage.” It occurs due to internal resistance in various components like the power source, passive elements, conductors, and connectors, leading to undesirable energy loss.

Voltage drop is the amount of voltage reduction that occurs in all components of the circuit caused by impedance when current flows through it. Therefore, the voltage at the receiving end of the circuit is always less than the voltage at the sending end of the voltage source.

When current is flowing, components such as resistors consume energy, and the amount of work per unit charge associated with the current flowing through a given component is the component’s voltage drop. The voltage dropped by a component accounts for a portion of the voltage generated by the battery.

Voltage drop is the decrease in voltage that occurs when current flows through a circuit. Voltage drop can be a significant issue in electrical circuits, as it can cause equipment to malfunction or fail. Therefore, it’s important to calculate the voltage drop in a circuit to ensure that the circuit is functioning properly and safely.