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Which of the following statement is true...

Which of the following statement is true ?

A

In insulators the conduction band is completely empty

B

In conductor the conduction band is completely empty

C

In semiconductor the conduction band is partially empty at low temperature

D

In insulators the conduction band is completely filled with electrons

Text Solution

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The correct Answer is:
A
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MOTION-SEMI CONDUCTOR AND LOGIC GATES-EXERCISE 2
  1. Which of the following statement is true ?

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  2. The materials resistance of which decreases with increases in temperat...

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  3. The diffusion current in a p-n junction is

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  4. In a n-type semiconductor, the femi energy level lies

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  5. If n-type semiconductor is heated then

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  6. Forbidden energy gap of a silicon semiconductor is 1.12 eV. In order t...

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  7. If the two ends of a p-n junction are joined by a conducting wire, the...

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  8. A P-type semiconductor has acceptor levels 57 meV above the valence ba...

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  9. A doped semiconductor has impurity levels 32 meV below the conduction ...

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  10. The mean free path of a conduction electron in a metal is 5 xx 10^(-8)...

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  11. Which of the following statements is correct ?

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  12. In semiconductor the concentrations of electron and holes are 8xx10^(1...

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  13. The current through an ideal PN junction shown in the following circui...

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  14. Two identical p-n junctions may be connected in series in which a batt...

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  15. In the figure an A.C of rms voltage 200 volt is appled to the circuit ...

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  16. Which of the following statements is wrong ?

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  17. If the following input signal is sent through a P-N junction diode, th...

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  18. The value of current in the following diagram will be –

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  19. In which of the following figure the junction diode is reverse biased ...

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  20. Two identical capacitors A and B are charged to the same potential V a...

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