Basic Qualification · B-005 Basic electronics and theory · B-005-012-007
Dans un circuit résonant série, le circuit présente, à la résonance:
- Aune impédance faible
- Bune impédance élevée
- Cune inductance mutuelle faible
- Dune inductance mutuelle élevée
Correct answer: A — une impédance faible. Question tirée de la banque officielle d'ISDE.
Why
At resonance in a series circuit, the opposing effects of the inductor and capacitor cancel each other out, leaving only the small resistance of the wires to stop the flow of 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