Basic Qualification · B-005 Basic electronics and theory · B-005-002-010
La résistance d'un conducteur varie avec:
- Al'humidité
- Bla température
- Cla tension
- Dle courant
Correct answer: B — la température. Question tirée de la banque officielle d'ISDE.
Why
When a metal wire gets hotter, its atoms vibrate more vigorously, making it harder for electrons to flow through, which increases 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