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The ratio of resistance of forward bias ...

The ratio of resistance of forward bias and reverse bias in p-n connection is …….

A

`(1)/(520)A`

B

`(1)/(24)A`

C

`(1)/(38)A`

D

`(1)/(15)A`

Text Solution

Verified by Experts

The correct Answer is:
B
`(1)/(24)A`
Total resistance of circuit `R=20+100=120Omega`
`therefore ` Current in circuit `I=(V)/(R )=(5)/(120)=(1)/(24)A`
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In a p-n junction diode, the current I can be expressed as I= I_(0) "exp" ((eV)/(2k_(B)T)-1) where I_(0) is called the reverse saturation current, V is the voltage across the diode and is positive for forward bias and negative for reverse bias, and I is the current through the diode, k_(B) is the Boltzmann constant (8.6 xx 10^(–5) eV//K) and T is the absolute temperature. If for a given diode I_(0) = 5 xx 10^(-12) A and T = 300 K, then (a) What will be the forward current at a forward voltage of 0.6 V? (b) What will be the increase in the current if the voltage across the diode is increased to 0.7 V? (c) What is the dynamic resistance? (d) What will be the current if reverse bias voltage changes from 1 V to 2 V?

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KUMAR PRAKASHAN-SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS -Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)
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  2. An electron hole pari is formed when light of maximum wavelength 6000...

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  3. The boolean expression of NOR gate is…….

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  4. Which of the following is not a type of tissue ?

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  5. The output of AND gate is 1, so ……

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  6. The ratio of resistance of forward bias and reverse bias in p-n connec...

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  7. A sinusoidal voltage of peak value 220 volts is connected to a diode ...

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  8. In a zener diode, the reverse bias voltage is 3V and width of the depl...

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  9. Gate can be obtained by shorting both the input terminals of a NOR gat...

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  10. The figure shows the input signal A, input signal B and output signal ...

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  11. What kind of p-n junction diode does not require any kind of bias?

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  12. Which logic gate is represented by the following logic gates?

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  13. For the circuit shown in the figure, calculate the equivalent resistan...

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  14. The value of beta of a transistor is 19. The value of alpha will be ……

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  15. The wavelength of photon having energy of 35 keV is …….. (h=6.625xx1...

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  16. The band gaps of a conductor, semiconductor and insulator are respecti...

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  17. Which of following gates produces output of 1 ?

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  18. The electric field for p-n junction is 1xx10^(6) V/m and depletion reg...

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  19. In p-n junction the width of space charge region is approximately ….. ...

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  20. ……as a impurity, when added in Si or Ge P- type semiconductor is obtai...

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