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WorksheetsChapter 1 - Semiconductor Material
Total questions: 10
Worksheet time: 5mins
The atomic number of an atom refers to the
number of electrons in a charged atom
number of protons in the nucleus
number of neutrons in the nucleus
net electrical charge of the atom
A material that offers a very low level of conductivity under an applied voltage is known as
Semiconductor
Conductor
Insulator
Dielectric
The energy band in which free electrons exist is the
Valence Band
Conduction Band
First Band
Second Band
What determines whether a solid material will act as a conductor, a semiconductor or an insulator?
The energy level of the valence band
The energy level of the conduction band
The energy difference across the forbidden gap
None of the answer mentioned above
In semiconductor crystal, the atoms are held together by
The interaction of valence electrons
Forces of attraction
Ionization
Covalent bond
The depletion region consists of
no majority carriers
nothing but minority carriers
positive or negative ions
positive ion only
Which of the sentence describe a p-type semiconductor?
Electrically stable
Positively charged ion
Negatively charged ion
Has many free electrons
Atoms contains three (3) basic particles which are (choose 3 answers)
Protons
Neutrons
Free Electrons
Electrons
The following material is an example of trivalent impurities EXCEPT
Aluminium
Gallium
Indium
Bismuth
The maximum number of electrons that can exist in the third shell/orbit is
2
8
18
32
