Explore topic-wise MCQs in Electronic Devices Circuits.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

Calculate the average random thermal energy at T=300K?a) 0.038eVb) 3.8eVc) 38eVd) 0.38eV 10.In the above figure, a semiconductor having an area ‘A’ and length ‘L’ and carrying current ‘I’ applied a voltage of ‘V’ volts across it. Calculate the relation between V and A?a) V= ((ρ*L)/A)*Ib) V= ((ρ*

A. 0.038eVb) 3.8eVc) 38eVd) 0.38eV 10.In the above figure, a semiconductor having an area ‘A’ and length ‘L’ and carrying current ‘I’ applied a voltage of ‘V’ volts across it. Calculate the relation between V and A?a) V= ((ρ*L)/A)*I
B. 3.8eVc) 38eVd) 0.38eV 10.In the above figure, a semiconductor having an area ‘A’ and length ‘L’ and carrying current ‘I’ applied a voltage of ‘V’ volts across it. Calculate the relation between V and A?a) V= ((ρ*L)/A)*Ib) V= ((ρ*A)/L)*I
C. 38eVd) 0.38eV 10.In the above figure, a semiconductor having an area ‘A’ and length ‘L’ and carrying current ‘I’ applied a voltage of ‘V’ volts across it. Calculate the relation between V and A?a) V= ((ρ*L)/A)*Ib) V= ((ρ*A)/L)*Ic) V= ((ρ*I)/(A*L))
D. 0.38eV 10.In the above figure, a semiconductor having an area ‘A’ and length ‘L’ and carrying current ‘I’ applied a voltage of ‘V’ volts across it. Calculate the relation between V and A?a) V= ((ρ*L)/A)*Ib) V= ((ρ*A)/L)*Ic) V= ((ρ*I)/(A*L))d) V=((ρ*I*A*L)View Answer
Answer» B. 3.8eVc) 38eVd) 0.38eV 10.In the above figure, a semiconductor having an area ‘A’ and length ‘L’ and carrying current ‘I’ applied a voltage of ‘V’ volts across it. Calculate the relation between V and A?a) V= ((ρ*L)/A)*Ib) V= ((ρ*A)/L)*I
Discussion
2.

What is the voltage difference if the current is 1mA and length and area is 2cm and 4cm2 respectively?(ρ=2Ωm)

A. 0.025V
B. 25V
C. 0.25V
D. None
Answer» E.
Discussion
3.

Does a semiconductor satisfy the ohm’s law?

A. True
B. False
Answer» B. False
Discussion
4.

Which of the following expressions doesn’t represent the correct formula for Drift current density?

A. J=σE
B. J=qnµE
C. J=µE
D. None
Answer» D. None
Discussion
5.

CALCULATE_THE_AVERAGE_RANDOM_THERMAL_ENERGY_AT_T=300K??$

A. 0.038eV
B. 3.8eV
C. 38eV
D. 0.38eV
Answer» B. 3.8eV
Discussion
6.

What is the electric field when the voltage applied is 5V and the length is 100cm?

A. 0.5V/m
B. 5V/m
C. 50V/m
D. None
Answer» D. None
Discussion
7.

Is resistivity is a function of temperature?

A. True
B. False
Answer» B. False
Discussion
8.

What is the voltage difference if the current is 1mA and length and area is 2cm and 4cm2 respectively?(ρ=2Ωm)$

A. 0.025V
B. 25V
C. 0.25V
D. None
Answer» E.
Discussion
9.

Which of the following expression represents the correct formula for the conductivity in an intrinsic material?

A. ρ=e(μ<sub>n+μ<sub>p</sub> </sub>)ni
B. σ=e(μ<sub>n+μ<sub>p</sub> </sub>)ni
C. σ=1/(e(μ<sub>n+μ<sub>p</sub> </sub>)ni)
D. ρ=1/(e(μ<sub>n+μ<sub>p</sub> </sub>)ni)
Answer» C. ‚âà√¨‚àö√¢=1/(e(‚âà√≠¬¨‚à´<sub>n+‚âà√≠¬¨‚à´<sub>p</sub> </sub>)ni)
Discussion
10.

In which range of temperature, freeze out point begins to occur?

A. Higher range
B. Lower range
C. Middle range
D. None
Answer» C. Middle range
Discussion
11.

Does a semiconductor satisfy the ohm’s law?$

A. True
B. False
Answer» B. False
Discussion
12.

Which of the following expressions doesn’t represent the correct formula for Drift current density?$

A. J=σE
B. J=qnµE
C. J=µE
D. None
Answer» B. J=qn¬¨¬®¬¨¬µE
Discussion
13.

What is the SI unit of conductivity?

A. Ωm
B. (Ωm)-1
C. Ω
D. m
Answer» C. ‚Äö√Ñ√∂‚àö√´¬¨‚àÇ
Discussion