Basic Qualification · B-005 Basic electronics and theory · B-005-006-002
Une charge nécessite 5 ampères à 12 volts CC. Quelle est la puissance nominale minimale requise du transformateur de puissance?
- A17 watts
- B2,4 watts
- C6 watts
- D60 watts
Correct answer: D — 60 watts. Question tirée de la banque officielle d'ISDE.
Why
To find the power needed, multiply the voltage by the current: 12 volts times 5 amperes equals 60 watts. 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