The most commonly used semiconductor is________________?
A. Germanium
B. Silicon
C. Carbon
D. Sulphur
Semiconductor Theory
A pentavalent impurity has______________Valence electrons?
A pentavalent impurity has______________Valence electrons?
A. 3
B. 5
C. 4
D. 6
Addition of trivalent impurity to a semiconductor creates many_______________?
Addition of trivalent impurity to a semiconductor creates many_______________?
A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons
As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor_______________?
As the dog to a pure semiconductor increases, the bulk resistance of the semiconductor_______________?
A. Remains the same
B. Increases
C. Decreases
D. None of the above
A hole in a semiconductor is defined as_________________?
A hole in a semiconductor is defined as_________________?
A. A free electron
B. The incomplete part of an electron pair bond
C. A free proton
D. A free neutron
A trivalent impurity has______________valence electrons?
A trivalent impurity has______________valence electrons?
A. 4
B. 5
C. 6
D. 3
The strength of a semiconductor crystal comes from______________?
The strength of a semiconductor crystal comes from______________?
A. Forces between nuclei
B. Forces between protons
C. Electron-pair bonds
D. None of the above
A semiconductor is formed by ______________bonds?
A semiconductor is formed by ______________bonds?
A. Covalent
B. Electrovalent
C. Co-ordinate
D. None of the above
The resistivity of a pure silicon is about _______________?
The resistivity of a pure silicon is about _______________?
A. 100 O cm
B. 6000 O cm
C. 3 x 105 O m
D. 6 x 10-8 O cm
When a pentavalent impurity is added to a pure semiconductor, it becomes________________?
When a pentavalent impurity is added to a pure semiconductor, it becomes________________?
A. An insulator
B. An intrinsic semiconductor
C. p-type semiconductor
D. n-type semiconductor