Advanced Qualification · A-001 Advanced theory · A-001-001-009
Quelle est la constante de temps d'un circuit dont le condensateur, d'une valeur de 470 microfarads, est en série avec une résistance de 470 kilohms?
- A221 000 secondes
- B47 000 secondes
- C470 secondes
- D221 secondes
Correct answer: D — 221 secondes. Question tirée de la banque officielle d'ISDE.
Why
The time constant is found by multiplying the resistance in ohms by the capacitance in farads. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced theory is section A-001 of the Advanced exam: Advanced theory: time constants, reactance, impedance, resonance, Q, and the mathematics behind tuned circuits.
Drill A-001 — free, no account