1) At room temperature, donor atoms: a. Increase the number of electrons in the

Question

1) At room temperature, donor atoms:

a. Increase the number of electrons in the conduction band.

b. Increase the number of holes in the valance band.

c. Lower the Fermi level.

d. Increase the electrical resistivity.

e. Non of the above.

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2) At room temperature, acceptor atoms:

a. decrease the number of electrons in the conduction band.

b. increase the number of holes in the valance band.

c. lower the Fermi level.

d. increase the electrical conductivity.

e. all of the above.

Explanation / Answer

1) a

2) e

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