Basic Qualification · B-004 Circuit components · B-004-002-008
Quel composant à semi-conducteur s'illumine de diverses couleurs selon sa composition chimique?
- AUne diode à vide
- BUne diode électroluminescente
- CUne lampe fluorescente
- DUne lampe au néon
Correct answer: B — Une diode électroluminescente. Question tirée de la banque officielle d'ISDE.
Why
A light-emitting diode is a semiconductor that glows when electricity passes through it, and the specific colour it produces depends entirely on the chemical materials used to build the chip. The full explanation — and one for every question — is in Pro.
Practise this section
Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.
Drill B-004 — free, no account