Advanced Qualification · A-002 Advanced components and circuits · A-002-003-009
Alpha of a bipolar transistor is equal to:
- A beta x (1 + beta)
- B beta x (1 - beta)
- C beta / (1 - beta)
- D beta / (1 + beta)
Correct answer: D — beta / (1 + beta). From the official ISED question bank, verified word for word.
Why
Alpha measures how much of the current entering a bipolar transistor's emitter actually reaches the collector, and it is always slightly less than one. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.