Coupling or mutual impedance between power and telecom is a function of...

Study for the BICSI OSP Design Test. Prepare using multiple choice questions, with hints and explanations to enhance understanding. Succeed in your exam journey!

Coupling between power and telecom conductors is governed mainly by how close the wires are to each other. The electromagnetic fields from the power conductors induce currents in nearby telecom conductors, so the tighter the separation, the stronger the mutual impedance and the greater the potential interference. Increasing the distance reduces the field interaction and thus the coupling. Shielding and longer exposure can influence the amount of interference in practice, but the primary factor that sets how much coupling occurs is the physical separation between them. The return-path resistance affects current loops in the system, not the mutual coupling between power and telecom.