Basic Qualification · B-005 Basic electronics and theory · B-005-004-001
Quelle est la tension aux bornes d'une résistance de 2 ohms si 0,5 ampère la traverse?
- A2,5 volts
- B1,5 volt
- C1,0 volt
- D0,25 volt
Correct answer: C — 1,0 volt. Question tirée de la banque officielle d'ISDE.
Why
To find the voltage across a resistor, you multiply the current flowing through it by its resistance. 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