When n-p-n transistor is used as an amplifier | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In an $n-p-n$ transistor,the emitter is $n$-type,the base is $p$-type,and the collector is $n$-type.When used as an amplifier,the base-emitter jun

Vedclass · Accepted Answer

electrons move from base to collector

Vedclass · Answer

(A) In an $n-p-n$ transistor,the emitter is $n$-type,the base is $p$-type,and the collector is $n$-type.When used as an amplifier,the base-emitter junction is forward-biased and the base-collector junction is reverse-biased.Due to the forward bias,electrons are injected from the $n$-type emitter into the $p$-type base.Because the base is very thin and lightly doped,most of these electrons diffuse through the base into the collector region.The collector is kept at a positive potential relative to the base,which attracts these electrons from the base to the collector.Therefore,electrons move from the base to the collector.

When $n-p-n$ transistor is used as an amplifier :

Similar Questions

In an $NPN$ transistor,the collector current is $10\, mA$. If $90\%$ of the electrons emitted reach the collector,then:

What is the basic constitutional unit in the electronic circuit?

For a given transistor,if $\alpha = 0.95$,find the common emitter current gain $\beta$.

If collector current is $120\, mA$,base current is $2\, mA$,and resistance gain is $3$,what is the power gain?

Vedclass Test Series

Exam Paper Generator

Online Exam Module