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For NPN transistor in active mode, base-emitter junction is ___ and base-collector is ___:
ABoth off
BBoth forward
CBoth reverse
DForward and reverse — BE forward, BC reverse (active region)
Answer & Solution
Correct answer: D. Forward and reverse — BE forward, BC reverse (active region)
Active mode: BE forward bias (inject electrons into base), BC reverse bias (collect electrons that diffuse across thin base region). Both forward = saturation; both reverse = cutoff.
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