Basic Qualification · B-005 Basic electronics and theory · B-005-006-005
Quand deux résistances de 500 ohms, 1 watt, sont raccordées en parallèle, elles peuvent dissiper une puissance maximale totale de:
- A1 watt
- B4 watts
- C2 watts
- D0,5 watt
Correct answer: C — 2 watts. Question tirée de la banque officielle d'ISDE.
Why
When two identical resistors are wired in parallel, each one shares the load equally, so the total power they can handle is simply the sum of their individual ratings. 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