Basic Qualification · B-005 Basic electronics and theory · B-005-006-004
Quand deux résistances de 500 ohms, 1 watt, sont raccordées en série, la puissance maximale totale qu'elles peuvent dissiper est de:
- A0,5 watt
- B4 watts
- C2 watts
- D1 watt
Correct answer: C — 2 watts. Question tirée de la banque officielle d'ISDE.
Why
Each resistor can safely handle one watt of power, so when you connect two of them in series, they share the electrical load. 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