Basic Qualification · B-005 Basic electronics and theory · B-005-005-004
Deux résistances de 1000 ohms sont connectées en parallèle sur une batterie de 12 volts. Quel est le courant total?
- A120 milliampères
- B24 milliampères
- C12 milliampères
- D60 milliampères
Correct answer: B — 24 milliampères. Question tirée de la banque officielle d'ISDE.
Why
With two identical 1000-ohm resistors in parallel, the total resistance drops to 500 ohms because the current has two equal paths to flow through. 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