Basic Qualification · B-005 Basic electronics and theory · B-005-010-001
How does an inductor react to AC?
- AAs the frequency of the applied AC increases, the reactance decreases
- BAs the frequency of the applied AC increases, the reactance increases
- CAs the amplitude of the applied AC increases, the reactance decreases
- DAs the amplitude of the applied AC increases, the reactance increases
Correct answer: B — As the frequency of the applied AC increases, the reactance increases. From the official ISED question bank, verified word for word.
Why
An inductor resists changes in current, and alternating current changes direction constantly. The full explanation — and one for every question — is in Pro.
Practise this section
Basic electronics and theory is section B-005 of the Basic exam: The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.
Drill B-005 — free, no account