Basic Qualification · B-004 Circuit components · B-004-006-007
Des tolérances de résistance suivantes, laquelle est de plus faible précision?
- A10 %
- B20 %
- C0,1 %
- D5 %
Correct answer: B — 20 %. Question tirée de la banque officielle d'ISDE.
Why
A 20% tolerance means the actual resistance can vary by one-fifth of the stated value, creating the widest possible range of error and therefore the lowest precision. The full explanation — and one for every question — is in Pro.
Practise this section
Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.
Drill B-004 — free, no account