Advanced Qualification · A-002 Advanced components and circuits · A-002-007-011
The FET amplifier common gate circuit is similar to which of the following bipolar transistor amplifier circuits?
- ACommon emitter
- BCommon base
- CCommon mode
- DCommon collector
Correct answer: B — Common base. From the official ISED question bank, verified word for word.
Why
In a common gate FET amplifier, the input signal enters the source while the gate stays at a steady voltage, much like how a common base bipolar transistor takes its input at the emitter while the base remains fixed. 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