Basic Qualification · B-005 Basic electronics and theory · B-005-002-004
Lequel des matériaux suivants est le meilleur conducteur?
- AL'aluminium
- BLe cuivre
- CLe carbone
- DLe silicium
Correct answer: B — Le cuivre. Question tirée de la banque officielle d'ISDE.
Why
Copper is the best conductor here because its atoms let electrons flow through them with very little resistance, making it the standard choice for wiring in homes and radios. 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