General exam question G5A05
Subelement G5, ELECTRICAL PRINCIPLES· Group G5A
G5A05
How does an inductor react to AC?
- A.As the frequency of the applied AC increases, the reactance decreases
- B.As the amplitude of the applied AC increases, the reactance increases
- C.As the amplitude of the applied AC increases, the reactance decreases
- D.As the frequency of the applied AC increases, the reactance increases (correct answer)
WhyAn inductor's reactance increases as the frequency of the applied AC increases. An inductor's reactance is directly proportional to frequency (X_L = 2πfL), so as the applied AC's frequency rises, inductive reactance rises right along with it, answer D. Reactance falls with rising frequency in a capacitor, not an inductor, which rules out A, and reactance in either component doesn't depend on the signal's amplitude, which rules out B and C.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
Related questions
- G5A01What happens when inductive and capacitive reactance are equal in a series LC circuit?
- G5A02What is reactance?
- G5A03Which of the following is opposition to the flow of alternating current in an inductor?
- G5A04Which of the following is opposition to the flow of alternating current in a capacitor?
- G5A06How does a capacitor react to AC?