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Region which have no free electron and h...

Region which have no free electron and holes in P-N junction is

A

n region

B

p region

C

depletion region

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
The depletion region created at the junction is devoid of free charge carriers.
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Using the microscopic form of Ohm's law (J=sigma E) , prove that conductivity of a metal can be written as sigma="ne"mu . Here n is the number of free electrons per unit volume and mu is mobility of free electrons . In case of semiconductors there are two types of conduction particles, one is free electrons and the other is known as a hole. Charge on the hole may be assumed to be equal and opposite of that on electron. The number density of free electrons and holes in the semiconducting material are n and p respectively. Assuming mu_e and mu_h as mobility of free electrons and holes respectively , write the exopression of conductivity of the semiconducting material.

In a P-N junction diode :

PHYSICS WALLAH-SEMICONDUCTOR ELECTRONICS -NEET PAST 5 YEAR QUESTION
  1. Region which have no free electron and holes in P-N junction is

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  2. For the logic circuit shown, the truth table is

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  3. The increase in the width of the depletion region in a p-n junction di...

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  4. The solids which have negative temperature coefficient of resistance a...

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  5. For transistor action, which of the following statements are correct ?

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  6. Which of the following gate is called universal gate

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  7. Out of following which one is a forward biased diode

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  8. A npn transistor is connectedin CEC in which collector voltage drop ac...

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  9. Intrinsic semiconductor is converted into ntype extrinsic semiconducto...

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  10. The correct boolean operation represented by the circuit diagram drawn...

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  11. For a p-type semiconductor, which of the following statements is true?

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  12. In the circuit shown in the figure, the input voltage V(i) is 20V,V(BE...

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  13. In a p-n junction diode, change in temperature due to heating

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  14. In the combination of the following gates the output Y can be written ...

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  15. Which of the following represents forward biase diode?

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  16. the given electrical network is equivalent to

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  17. In a common emitter transistor amplifier the audio signal voltage acro...

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  18. Two sides of a semiconductor germanium crystal A and B are doped with ...

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  19. From the circuit of the following logic gates, the basic logic gate ob...

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  20. A common emitter amplifier circuit is shown in the figure below. For t...

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  21. The given circuit has two ideal diodes connected as show in the figure...

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