Basic Qualification · B-003 Station assembly, practice and safety · B-003-016-002
Lequel de ces composants possède un pôle positif et un pôle négatif?
- AUn potentiomètre
- BUn fusible
- CUne résistance
- DUne batterie
Correct answer: D — Une batterie. Question tirée de la banque officielle d'ISDE.
Why
A battery creates electricity by storing chemical energy and pushing electrons from a negative terminal to a positive terminal, which is why it is the only item listed with distinct poles. The full explanation — and one for every question — is in Pro.
Practise this section
Station assembly, practice and safety is section B-003 of the Basic exam: Building a station safely: power supplies, grounding, RF exposure, lightning, feedline routing, and what a transmitter, receiver and transceiver actually do.
Drill B-003 — free, no account