Basic Qualification · B-005 Basic electronics and theory · B-005-003-011
Vous avez raccordé un émetteur-récepteur à un bloc d'alimentation. Lorsque vous mettez l'alimentation sous tension, son fusible saute immédiatement. Quelle défaillance du circuit fait sauter le fusible?
- AUn circuit résonant
- BUn circuit fermé
- CUn court-circuit
- DUn circuit ouvert
Correct answer: C — Un court-circuit. Question tirée de la banque officielle d'ISDE.
Why
A short circuit happens when electricity finds an unintended path with almost no resistance, causing a massive surge of current that melts the fuse instantly to protect the rest of the system. 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