Semiconductor Devices — Practice Quiz
Telangana Open School (TOSS) · Class 12 · Physics
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Quick Quiz: Semiconductor Devices
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Which of the following materials is a semiconductor?
What is the approximate resistivity range of semiconductors?
At absolute zero, a pure semiconductor behaves as:
Which energy band contains electrons that are free to move and conduct electricity?
Sample Questions
What is the unit of energy gap in semiconductors?
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Electron volt (eV)
The energy gap between valence and conduction bands is measured in electron volts (eV), a standard unit in semiconductor physics.
In an intrinsic semiconductor, the number of electrons and holes are:
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Equal
In intrinsic semiconductors, electron-hole pairs are generated in pairs due to thermal energy, so the number of electrons equals the number of holes.
Doping is the process of adding impurities to a pure semiconductor to:
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Modify its electrical properties
Doping introduces extra charge carriers (electrons or holes), thereby changing the conductivity and making the semiconductor extrinsic.
Which group of elements is used for doping to create n-type semiconductors?
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Group V
Pentavalent impurities from Group V (like phosphorus) provide extra electrons, forming n-type semiconductors.
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