Basic Qualification · B-005 Basic electronics and theory · B-005-010-010
What property allows an RF choke coil to have little effect on signals meant to flow through the coil?
- A Low reactance at low frequencies
- B High reactance at low frequencies
- C Low reactance at high frequencies
- D High reactance at high frequencies
Correct answer: A — Low reactance at low frequencies. From the official ISED question bank, verified word for word.
Why
An RF choke coil is designed to block high-frequency signals while letting lower-frequency currents pass freely. The full explanation — and one for every question — is in Pro.
Practise this section
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.