Basic Qualification · B-005 Basic electronics and theory · B-005-004-005
Quelle est la résistance d'un circuit qui exige 0,25 ampère d'une source de 12 volts?
- A3 ohms
- B12 ohms
- C0,25 ohm
- D48 ohms
Correct answer: D — 48 ohms. Question tirée de la banque officielle d'ISDE.
Why
To find the resistance, you divide the voltage by the current. 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