An inductor has an inductive reactance of 12 Ω , and a wire resistance of 16 Ω . What is the impedance of the inductor?
A) 4 Ω
B) 20 Ω
C) 28 Ω
D) 400 Ω

Question

Quizplus · Accepted Answer

The impedance of an inductor is calculated using the formula $Z = \sqrt{R^2 + X_L^2}$, where $R$ is the resistance and $X_L$ is the inductive reactance. Substituting the given values, $Z = \sqrt{16^2 + 12^2} = \sqrt{256 + 144} = \sqrt{400} = 20 \Omega$.

An Inductor Has an Inductive Reactance of 12 Ω