When the transistor is used as an amplifier,
- AEmitter-base junction must be reverse biased,Collector-base junction must be forward biased
- BEmitter-base junction must be forward biased,Collector-base junction must be forward biased
- CEmitter-base junction must be reverse biased,Collector-base junction must be reverse biased
- DEmitter-base junction must be forward biased,Collector-base junction must be reverse biased
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