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When npn  transistor is used as an amplifier

  • Option 1)

    electrons move from base to collector

  • Option 2)

    holes move from emitter to base

  • Option 3)

    electrons move from collector to base

  • Option 4)

    holes move from base to emitter.

 

Answers (1)

best_answer

As we have learnt,

 

Transistor -

Three layered semiconducting device .

NPN or PNP

- wherein

1.    Emitter is heavily doped

2.    collector is moderately doped .

3.    Base is lightly doped & very thin

 

 In npn transistor electron will move from emitter to base then same electron comming from emitter towards base will move to collector.

 


Option 1)

electrons move from base to collector

Option 2)

holes move from emitter to base

Option 3)

electrons move from collector to base

Option 4)

holes move from base to emitter.

Posted by

Avinash

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