At absolute temperature, an intrinsic semiconductor has ___________

At room temperature, an intrinsic semiconductor has ___________

A

Many holes only

B

A few free electrons and holes

C

Many free electrons only

D

No holes or free electrons

At room temperature an intrinsic semiconductor has

A

a few free electrons and holes

B

many holes

C

many free electrons

D

No holes

E

None of the above

An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?

A

Doping

B

Valence electrons

C

Free electrons

D

Thermal energy

E

None of the above

The number of free electrons and holes in intrinsic semiconductor increases when the temperature

A

Decreases

B

Increases

C

Stays the same

D

0^oC

E

None of the above

At room temperature the current in an intrinsic semiconductor is due to

A

Holes

B

Electrons

C

Ions

D

Holes and electrons

At room temperature the number of conducting electrons in an intrinsic semiconductor

A

Is almost equal to the number of valence electrons

B

Is about half the number of valence electrons

C

Is small as compared to the number of valence electrons

D

Is a very small fraction of the number of valence electrons

In an intrinsic semiconductor, at a given temperature T

A

The number of electrons-hole pairs generated per second due to thermal motion are equal to the number of electron-hole pairs lost per second due to recombination

B

The number of electron-hole pairs generated per second due to thermal motion is always less than the number of electron-hole pairs lost per second due to recombination

C

The number of electron hole pairs generated per second due to thermal motion is always more than the number of electron-hole pairs lost per second due to recombination

D

Any of the above

As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ___________

A

Remains the same

B

Increases

C

Decreases

D

None of the above

In an intrinsic semiconductor, the number of free electrons

A

Equals the number of holes

B

Is less than the number of holes

C

Is greater than the number of holes

D

Impossible to say

E

None of the above

For a perfect gas, according to Boyle’s law (where p = Absolute pressure, v = Volume and T = Absolute temperature)

A

$$\frac{{\text{v}}}{{\text{T}}}$$ = constant, if p is kept constant

B

pv = constant, if T is kept constant

C

$$\frac{{\text{T}}}{{\text{p}}}$$ = constant, if v is kept constant

D

$$\frac{{\text{p}}}{{\text{T}}}$$ = constant, if v is kept constant

At absolute temperature, an intrinsic semiconductor has ___________

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