Semiconductors
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Physics
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University
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Practice Problem
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Seema Mor
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which among these is NOT the property of a semiconductor?
Four electrons in the valence band forming covalent bonds
At 0 Kelvin semiconductor acts like an insulator
Semiconductors have two type of charge carriers
Semiconductors are temperature insensitive
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which among these is the fundamental characteristic of a p type semiconductor
Electrons are the majority charge carriers
Has a tendency to gain an electron
Has a tendency to donate an electron
Easy to conduct electricity
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Method implemented to increase conductivity is
Increase electrical field
Increase temperature
Increase doping concentration
Shining light of proper wavelength on the semiconductor
All of the above
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which among these is NOT a semiconductor
Germanium
Silicon
Gallium Arsenide
Titanium
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following DOES NOT hold good for a n type semiconductor
Electron concentration is greater than hole concentration
Obtained by doping an intrinsic semiconductor with a trivalent impurity
Dopants are Phosphorous or Arsenic
Minority charge carriers are holes
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Electrons and holes are equal in magnitude but opposite in polarity
True
False
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
The maximum energy that an electron in a metal has at the absolute zero temperature is called
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