Question is ⇒ A-P type material has an acceptor ion concentration of 1 x 1016 per cm3. Its intrinsic carrier concentration is 1.48 x 1010/ cm. The hole and electron mobilities are 0.05m2/V-sec and 0.13 m2/V-sec respectively calculate the resistivity of the material, Options are ⇒ (A) 12.5 Ω-cm, (B) 1.25 Ω-cm, (C) 0.125 Ω-cm, (D) 125 Ω-cm, (E) , Leave your comments or Download question paper.

Question is ⇒ A-P type material has an acceptor ion concentration of 1 x 1016 per cm3. Its intrinsic carrier concentration is 1.48 x 1010/ cm. The hole and electron mobilities are 0.05m2/V-sec and 0.13 m2/V-sec respectively calculate the resistivity of the material, Options are ⇒ (A) 12.5 Ω-cm, (B) 1.25 Ω-cm, (C) 0.125 Ω-cm, (D) 125 Ω-cm, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A-P type material has an acceptor ion concentration of 1 x 10¹⁶ per cm³. Its intrinsic carrier concentration is 1.48 x 10¹⁰/ cm. The hole and electron mobilities are 0.05m²/V-sec and 0.13 m²/V-sec respectively calculate the resistivity of the material
A.	12.5 Ω-cm [Wrong Answer]
B.	1.25 Ω-cm [Correct Answer]
C.	0.125 Ω-cm [Wrong Answer]
D.	125 Ω-cm [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Turn on time of a transistor switch is equal to sum of (where t_r is rise time, t_d is delay time)
t_s - t_r
t_s - t_f
t_d + t_r
2t_r

⇒ A voltage DAC is generally slower than current DAC
because of more accuracy
because of higher resolution
because of response time of op-amp current to voltage converter
none of the above

⇒ A signal f(t) = cos 10pt + 3 cos 4pt is instantaneously sampled. The maximum allowable value of sampling interval T_s in sec is
1 / 4 sec
1 / 8 sec
1 / 8p sec
1 / 10 sec

⇒ A semiconductor Read-only-Memory basically is
a combinational logic circuit
a set of flip-flop memory elements
a sequential circuit with flip-flops and gates
none of the above

⇒ Two linearly polarized plane waves A and B travelling in free space in the positive x direction meet at a point. Wave A is polarized in the y direction and the wave B is polarized in the z direction. If the two waves are of equal amplitude and are in phase quadrature, the resultant wave will be
circularly polarized
elliptically polarized
linearly polarized
vertically polarized

⇒ The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be
32 mH
16 mH
8 mH
4 mH

⇒

Assertion (A): In p-n-p transistor collector current is termed negative.

Reason (R): In p-n-p transistor holes are majority carriers.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

⇒ Which of the following codes provides parity checks?
CCITT-2
EBCDIC
ASCII
Baudot

⇒ The emission of light is LED due to
emission of holes
emission of electrons
generation of electromagnetic radiations
conversion of heat energy into illumination

⇒ In figure, the value of R shoul
12 Ω
6 Ω
3 Ω
1.5 Ω

⇒ Thermistor has a positive temperature coefficient.
TRUE
FALSE

⇒ The work function of a photo surface whose threshold wave length is 1200 A, will be
0.103 eV
0.673 eV
1.03 eV
1.27 eV

⇒ Consider the following statem
1 alone
2 alone
3 alone
1 and 3

⇒ The memory hierarchy in microprocessor based system is
register, cache, primary, mass, off line back up
cache, register, primary, mass, off line back up
cache, register, mass, primary, off line back up
register, cache, mass, primary, off line back up

⇒ In VHS format width of audio track is
5 mm
2 mm
1 mm
0.1 mm

⇒ Electrical contact materials used in switches, brushes and relays must possess
high thermal conductivity and high melting point
low thermal conductivity and low melting point
high thermal conductivity and low melting point
low thermal conductivity and high melting point

⇒ A short grounded vertical antenna has a length L which is 0.05λ at frequency f. If its radiation resistance at f is R ohms, then its radiation resistance at a frequency 2f will be
R/2Ω
RΩ
2RΩ
4RΩ

⇒

Assertion (A): In AM, use of SSB reduces the power and bandwidth requirement

Reason (R): A balanced modulator produces AM with carrier suppressed

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct

⇒ An excitation is applied to a system at t = T and the response in zero for -∞ < t < T. This system is
non casual
stable
casual
unstable

⇒ Radiation efficiency of an antenna is defined as the ratio of
Total power radiated by an antenna to the net power accepted by the antenna from the connected transmitter
The frequency at which minimum power is radiated to the frequency at which maximum power is radiated
Total power accepted from the transmitter to total power generated by the transmitter
Power in main lobe to that in the side lobe

⇒

Assertion (A): In a differential amplifier the current through common emitter resistor is called tail current

Reason (R): CMRR of an op-amp indicates how a differential signal amplified

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct

⇒ In FM, as the modulating frequency decreases and the modulating voltage amplitude
increases, the modulation index increases
decrease, the modulation index increases
remains constant, the modulation index increases
remains constant, the modulation index decreases

⇒ In an op-amp comparator, the positive or negative output is
saturated
amplifier
unsaturated
any of the above

⇒ JFET has __________ degree of isolation between input and output, and a __________ noise figure.
low, low
high, high
low, high
high, low

⇒ The average noise temperature of Earth, as viewed from space, is __________ °K.
254
303
100
500

⇒ The volt ratio box is basically a
potential divider
current transformer
a high resistance voltmeter
either (a) or (c)

⇒ Which of the following wave remains unaffected during day and night?
Tropospheric wave
Sky wave
Ground wave
None of the above

⇒ As regards BCH code, Hamming code and Reed-Solomon code
BCH and Hamming code are special cases of Reed-Solomon code
Reed-Solomon and Hamming code are special cases of BCH code
BCH and Reed-Solomon code are special case of Hamming code
none of the above

⇒ When a circuit is excited by ac sinusoidal source, the admittance is obtained by letting s = jω in Y(s).
TRUE
FALSE

⇒ A bridge type single phase cycloconverter changes the frequency f to f/3. Then one half wave of output contains
3 full waves of input
3 half waves of input
6 full waves of input
6 half waves of input