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There is no hole current in conductors b...

There is no hole current in conductors because they have

A

high conductivity

B

high electron density

C

no valence band

D

overlapping of valence and conduction bands.

Text Solution

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The correct Answer is:
D
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NARAYNA-SEMI CONDUCTOR DEVICES-C.U.Q
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  2. An electrically neutral semiconductor has

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  4. In the insulators

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  6. The level formed due to impurity atom, in the for hidden energy gap, v...

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  7. The bond in semiconductors is

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  8. On increasing temperature, the conductivity of pure semiconductors

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  9. The mobility of free electrons is greater then that of free holes beca...

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  10. A semiconductor at 0 K behaves as

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  11. Carbon , silicon and germanium have four valence elcectrons each . The...

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  12. The valency of impurity element for making p-type semiconductors is

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  13. In n-type semiconductors the electron concentration is equal to

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  14. Which of the following statements is not true ?

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  15. p-type semiconductor is

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  16. n-type semiconductor is

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  17. An electric field is applied across a semiconductor. Let n be the numb...

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

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  19. An n-type and p-type silicon can be obtained by doping pure silicon wi...

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  20. The width of forbidden gap in silicon crystal is 1.2 ev. When the crys...

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