WorksheetsSemiconductors
Total questions: 15
Worksheet time: 23mins
Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of
diode
semiconductor
conductor
insulator
superconductor
Which is not one of the properties of semiconductor?
4 electrons in outermost orbit, in covalent bonding.
atoms vibrate causes electron to break free from the bonds.
Electron free leaves hole.
Semiconductor has 2 types of charge carriers.
all of the above are the properties of it
The characteristics of p-type semiconductors is includes
Majority carriers are electron
Has tendency to gain electron
Has tendency to donor electron
Easy to conduct electricity
The process of adding an impurity to an intrinsic semiconductor is called
Doping
Ionization
Recombination
Atomic modification
What is the most common semiconductor material used for producing integrated circuits
Quartz
Silicon
Diamond
Tantalum
How is conduction increased in an p-type semiconductor?
by increased applied electrical field
by decreased applied electrical field
by the availability of extra holes
by the availability of donor electrons
Which of the following is a material that allows current to easily flow through it?
Semiconductor
Conductor
Insulator
Plastic
Which of the following is a generator?
conductivity of semiconductor increases with increase in temperature, because
number density of free charge carriers increases
relaxation time increases
both number density of free charge carriers and relaxation time increases
number density of free charge carriers increases relaxation time decreases but effect of decrease in relaxation time is much less than increase in number density
Valence electrons are
in the closest orbit to the nucleus
in the most distant orbit from the nucleus
in various orbits around the nucleus
not associated with a particular atom
The current in a semiconductor is produced by
electron only
holes only
negative ions
both electrons and holes
what is thermionic emission
the emission of electron when surface of metal cold down
the emission of proton when surface of metal get heated
the emission of electron when surface of metal get heated
the emission of negatively ion when surface of metal get heated
what is a cathode ray
the emission of electron when surface of metal get heated
a beam of fast moving electron
the emission of negatively when surface of metal get heated
the emission of light
the conductivity of semiconductor increase when
its temperature increase
its temperature decrease
it is moving in high velocity
the current applied increase
The characteristics of n-type semiconductors is includes
Majority carriers are holes
Majority carriers are electrons
Has tendency to donor electron
Easy to conduct electricity
