The factors that make the effective resistance of a coil more than its dc resistance do not include which of the following?
A) Skin effect
B) Eddy currents
C) Counter emf
D) Hysteresis

Question

Quizplus · Accepted Answer

Counter emf (electromotive force) does not directly affect the resistance of a coil; it is a reaction to changing currents in inductive components, not a factor that increases the resistance itself. Skin effect, eddy currents, and hysteresis all contribute to the effective resistance being higher than the DC resistance by causing additional losses or redistributing current flow.

The Factors That Make the Effective Resistance of a Coil