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WorksheetsUnit 2 - Semiconductor Physics Quiz no.2
Total questions: 15
Worksheet time: 15mins
Which of the following is a pentavalent impuity added while forming an extrinsic semiconductor ?
Boron
Arsenic
Indium
Gallium
Doping of Semiconductors
materials which can conduct electricity better than insulator, but not as well as conductors.
The process of adding of a certain amount of specific impurities atoms in the pure semiconductor.
when 4 electrons in outermost orbit.
The process of adding an impurity to an intrinsic semiconductor is called
Doping
Ionization
Recombination
Atomic modification
The minority carriers in P-type silicon are called _________________
Neutron
Proton
Electron
Hole
Which among these is NOT a semiconductor
Germanium
Silicon
Gallium Arsenide
Titanium
An n type semiconductor is negatively charged
True
False
When a pentavalent impurity is added to a pure semiconductor, it becomes ………
An insulator
An intrinsic semiconductor
p-type semiconductor
n-type semiconductor
Addition of trivalent impurity to a semiconductor creates many ……..
Holes
Free electrons
Valence electrons
Bound electrons
Hall effect is the effect that
when a current carrying conductor is placed perpendicularly uniform magnetic field
when a conductor is placed in magnetic field
voltage produced when a current conductor is placed perpendicular uniform magnetic field
Typical value of Hall voltage produced is about
few volt
few milivolt
few nanovolt
few kilovolt
Potential difference will be produced when one side of the electric conductor accumulating negative charges and another side of the condutor with positive charges.
True
False
The application(s) of Hall effect is/are
it can used to determine unknown magnetic field
identify the type of semiconductor used
to determine the amount of current that flow through the conductor
it can used as Hall probe
Diagram shows _________________ is produced.
Capacitance effect
Hall effect
Resistance effect
Photoelectric effect
In an intrinsic semiconductor, electron and hole concentrations are equal at which temperature?
0 K
Low Temperature
High Temperature
All Temperature
In an intrinsic semiconductor, the Fermi level
May be anywhere in the forbidden energy gap
Lies at the center of forbidden energy gap
Is near the conduction band
Is near the valence band
