Basic Qualification · B-005 Basic electronics and theory · B-005-009-008
Si vous branchez deux bobines de 12 millihenrys en série, quelle est l'inductance de la combinaison?
- A24 millihenrys
- B6 millihenrys
- C48 millihenrys
- D3 millihenrys
Correct answer: A — 24 millihenrys. Question tirée de la banque officielle d'ISDE.
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