Which of the following statements is true for | vedclass

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

Question

(A) In an $N$-type semiconductor,pentavalent impurity atoms are added to the intrinsic semiconductor. These impurity atoms provide extra electrons tha

Vedclass · Accepted Answer

The donor level lies closely below the bottom of the conduction band.

Vedclass · Answer

(A) In an $N$-type semiconductor,pentavalent impurity atoms are added to the intrinsic semiconductor. These impurity atoms provide extra electrons that are loosely bound. The energy levels of these extra electrons are known as donor energy levels. These donor energy levels are located just below the conduction band,typically about $0.01 \, eV$ for Germanium $(Ge)$ and $0.05 \, eV$ for Silicon $(Si)$. Because this energy gap is very small,thermal energy at room temperature is sufficient to excite these electrons into the conduction band,making them available for conduction.

Which of the following statements is true for an $N$-type semiconductor?

Similar Questions

If a gas is compressed isothermally,then the r.m.s. velocity of the molecules

Which of the following logic gates is a universal gate?

In the circuit shown,the readings of the ammeter and voltmeter are $4\,A$ and $20\,V$ respectively. The meters are non-ideal. Then $R$ is:

The radioactive sources $A$ and $B$ have half-lives of $2 \ hr$ and $4 \ hr$ respectively and initially contain the same number of radioactive atoms. At the end of $2 \ hr$,the ratio of their rates of disintegration is:

In $YDSE$,the separation between the slits is halved and the distance between the slit and the screen is doubled. The fringe width is

Vedclass Test Series

Exam Paper Generator

Online Exam Module