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

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 which section of a transistor is the doping concentration highest to produce a large number of majority charge carriers?

When an $N-P-N$ transistor is used as an amplifier,which of the following occurs?

In a transistor amplifier, $\beta = 62$, $R_L = 5 \times 10^3 \ \Omega$, and the input resistance is $500 \ \Omega$. The ratio of power gain to voltage gain is .......

The current gain of a transistor is $0.98$. If the transistor is used in a common emitter arrangement, what would be the change in collector current corresponding to a change of $0.5 \,mA$ in the base current (in $\,mA$)?

In the study of a transistor as an amplifier,if $\alpha = \frac{I_{C}}{I_{E}}$ and $\beta = \frac{I_{C}}{I_{B}}$,where $I_{C}$,$I_{B}$,and $I_{E}$ are the collector,base,and emitter currents respectively,then:

Vedclass Test Series

Exam Paper Generator

Online Exam Module