Extra exam question E6A06
Subelement E6, CIRCUIT COMPONENTS· Group E6A
What is the beta of a bipolar junction transistor?
- A.The frequency at which the current gain is reduced to 0.707
- B.The change in collector current with respect to the change in base current (correct answer)
- C.The breakdown voltage of the base-to-collector junction
- D.The switching speed
WhyBeta is the change in a bipolar junction transistor's collector current with respect to the change in base current. Beta is the ratio describing how much a bipolar junction transistor's collector current changes for a given change in base current, the transistor's fundamental current-gain figure in common-emitter operation, answer B. It isn't a cutoff frequency, a breakdown voltage rating, or a switching speed, those are separate transistor specifications.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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