Basic Qualification · B-005 Basic electronics and theory · B-005-009-008
If you wire two 12-millihenry chokes in series, what is the inductance of the combination?
- A3 millihenries
- B24 millihenries
- C6 millihenries
- D48 millihenries
Correct answer: B — 24 millihenries. From the official ISED question bank, verified word for word.
Why
When you connect two chokes, which are coils that store energy in a magnetic field, in a series line, their individual values simply add together. 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