Advanced Qualification · A-002 Advanced components and circuits · A-002-003-011
Beta of a bipolar transistor is equal to:
- Aalpha / (1 - alpha)
- Balpha / (1 + alpha)
- Calpha x (1 - alpha)
- Dalpha x (1 + alpha)
Correct answer: A — alpha / (1 - alpha). From the official ISED question bank, verified word for word.
Why
Beta measures how much a transistor amplifies current, and it relates to alpha, which is the ratio of collector current to emitter current. 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