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In semiconductors at a room tempreture...

In semiconductors at a room tempreture

A

the valence band is partially empty and the conduction band is partially filled

B

the valence band is completely filled and the conduction band is partially filled

C

`the valence band is completely filled

D

the conduction band is completely empty

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The correct Answer is:
A
At room ttemperatre some electrons move form `VB` to `CB`
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CP SINGH-SEMICONDUCTORS-Exercises
  1. An electric field us applied to a semiconductor.Let the number of char...

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  2. Solids having highest energy level partially filled with electrons are

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  3. In semiconductors at a room tempreture

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  4. The state of the energy gained by valence electrons when the temperatu...

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  5. Energy band in solids are a consequence of

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  6. Which of the following is semi-conductor?

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

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  8. Carbon , silicon and germanium have four valence electrons each . At r...

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  9. C and Si both have same lattice structure, having 4 bonding electrons ...

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  10. The difference in the variation of resistance with temperature in a me...

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  11. The probbility of electrons to be found in the conduction band of an i...

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  12. In a semiconducting material the mobilities of electrons and holes are...

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  13. The electrical conductivity of pure germanium can be increased by

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  14. A semiconductor is doped with a donor impurity

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  15. If N(P) and N(e) be the numbers of holes and conduction electrons in a...

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  16. The impurity atoms with which pure silicon should be doped to make a p...

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  17. The impurity atoms with which pure silicon may be droped to make it a ...

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  18. Choose the correct option

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  19. Majority carriers in a semiconductor are

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  20. Intrinsic semiconductor is electrically neutral. Extrinsic semiconduct...

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