Basic Qualification · B-004 Circuit components · B-004-005-004
Which electrode on a vacuum tube is operated with the highest positive voltage?
- ACathode
- BGrid
- CPlate
- DCollector
Correct answer: C — Plate. From the official ISED question bank, verified word for word.
Why
The plate is the electrode operated with the highest positive voltage because it must attract the stream of electrons flowing from the cathode to create the output signal. 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