Advanced Qualification · A-002 Advanced components and circuits · A-002-004-006
What are the three terminals of a junction field-effect transistor (JFET)?
- AEmitter, base 1, base 2
- BEmitter, base, collector
- CGate 1, gate 2, drain
- DGate, drain, source
Correct answer: D — Gate, drain, source. From the official ISED question bank, verified word for word.
Why
A junction field-effect transistor, or JFET, controls current flow using three specific parts: the gate, which acts like a valve to regulate the signal; the drain, where the current exits; and the source, where the current enters. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits is section A-002 of the Advanced exam: Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.
Drill A-002 — free, no account