What is another term for voltage drop?

Voltage drop is often referred to as IR drop, which arises from the electrical resistance present in a conductor when current flows through it. The term "IR" stands for "current (I) multiplied by resistance (R)," indicating that the voltage drop across a conductor is directly proportional to both the amount of current flowing and the resistance of the conductor. Understanding IR drop is critical in electrical systems because it can impact the performance of circuits, especially over long distances, where higher resistance can lead to significant voltage drops that affect the efficiency and reliability of electrical supply.

The other terms listed do not appropriately refer to voltage drop. Power loss pertains to the energy lost as heat due to resistance in conductors, but it is not synonymous with voltage drop. Line voltage is the voltage measured across a pair of conductors, but it does not account for the loss due to resistance. Frequency drop relates to a reduction in the frequency of an electrical signal, which is a completely different concept not related to voltage changes.