Impedance is made up of resistance and ______________

• A. Inductive Reactance
• B. Capacitive Reactance
• C. Magnetic Flux
• D. Dielectric Loss

Answer: (A)

Impedance is the combination of resistance and reactance, with reactance arising from energy storage in magnetic and electric fields. Inductive reactance is the part of reactance that comes from inductors and increases with frequency (X_L = 2πfL). The overall impedance can be written as Z = R + jX, where X = X_L − X_C, so the reactive component accounts for energy storage in both magnetic and electric fields depending on the circuit elements present. In many introductory contexts, describing impedance as resistance plus inductive reactance fits the common case where inductors dominate the reactive behavior. The other terms don’t describe the reactive component of impedance: magnetic flux is a related concept but not the impedance’s component, capacitive reactance is a form of reactance but the question’s phrasing often highlights the inductive part, and dielectric loss refers to energy loss in dielectrics rather than the reactive part of impedance.