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Which junction is forward biased when transistor is used as an amplifier?

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in Engineering Physics II by (679k points)
Which junction is forward biased when transistor is used as an amplifier?

(a) Emitter-Base

(b) Emitter-Collector

(c) Collector-Base

(d) No junction is forward biased

I have been asked this question in an online interview.

My doubt is from Transistors in portion Semiconductors of Engineering Physics II

1 Answer

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Best answer
Right choice is (a) Emitter-Base

To elaborate: For Transistor to be used as an amplifier, the emitter-base junction is forward biased and the base-collector region is reverse biased. This state is called an active state.

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