Basic Qualification · B-005 Basic electronics and theory · B-005-002-011
Quel terme décrit la direction du courant dans un circuit CC?
- ALa polarité
- BLa polarisation
- CLa directivité
- DLa phase
Correct answer: A — La polarité. Question tirée de la banque officielle d'ISDE.
Why
Polarity describes which end of a battery or power source is positive and which is negative, defining the fixed direction that direct current flows in a circuit. 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