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KCET2013PhysicsSemiconductors

When the transistor is used as an amplifier

Options

  1. AEmitter-base junction must be reverse biased, Collector-base junction must be forward
  2. BEmitter-base junction must be forward biased, Collector-base junction must be forward biased
  3. CEmitter-base junction must be reverse biased, Collector-base junction must be reverse biased
  4. DEmitter-base junction must be forward biased, Collector-base junction must be reverse biased

Correct answer

D. Emitter-base junction must be forward biased, Collector-base junction must be reverse biased

Step-by-step solution

To use a transistor as an amplifier, its input must be forward biased and output must be reversed biased. So, emitter-base junction must be forward biased and collector-base junction must be reverse biased.

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