Choose the correct answer: 1) At Zero degree Kelvin the Intrinsic Semiconductor
ID: 2292661 • Letter: C
Question
Choose the correct answer:
1) At Zero degree Kelvin the Intrinsic Semiconductor has _______.
a) Only Free Electrons.
b) Only Free Holes.
c) Both (a) and (b).
d) No Free Carries.
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2) At Zero degree Kelvin the Extrinsic Semiconductor has _______.
a) Only Free Electrons.
b) Only Free Holes.
c) Both (a) and (b).
d) No Free Carries.
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3) Electrons or Holes can exist within the _______.
a) Conduction band.
b) Valence band.
c) Forbidden band.
d) Both (a) and (b).
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4) When donor atoms are doped into an intrinsic Semiconductor, the Semiconductor becomes _______.
a) Extrinsic Semiconductor.
b) Compound Semiconductor.
c) n-type Semiconductor.
d) Both (a) and (c).
Explanation / Answer
1) d)no free carriers
Resistance of a intrinsic semiconductor depends on the temperature. Higher the temperature more the electrons- holes pair will be generated , thus the resistance will be low at high temperature. Now at low temperature the resistance will increase. Now at zero kelvin no electrons- holes pair will be generated . Since there is no free charge carriers in the semiconductor, the semiconductor will not conduct when a voltage is applied across it.
2)C)both a and b
3)D) both a and b
4)C) n type semiconductors