Basic Qualification · B-004 Circuit components · B-004-004-005
In a field-effect transistor, from which electrode do charge carriers leave the channel?
- A Drain
- B Collector
- C Source
- D Gate
Correct answer: A — Drain. From the official ISED question bank, verified word for word.
Why
In a field-effect transistor, the channel acts like a pipe where charge carriers flow in from the Source and exit through the Drain, much like water draining from a sink. The full explanation — and one for every question — is in Pro.
Practise this section
The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.