PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365601
\(C\) and \(Si\) both have same lattice structure, having 4 bonding electrons in each. However, \(C\) is insulator whereas \(Si\) is intrinsic semiconductor. This is because
1 The four bonding electrons in the case of \(C\) lie in the second orbit, whereas in the case of \(Si\) they lie in the third.
2 In case of \(C\), the valence bond is not completely filled at absolute zero temperature
3 In case of \(C\), the conduction band is partly filled even at absolute zero temperature
4 The four bonding electrons in the case of \(C\) lie in the third orbit, whereas for \(Si\) they lie in the fourth orbit
Explanation:
The four bonding electrons in the case of \(C\) lie in the second orbit. Whereas in case of \(Si\) they lie in the third orbit. So loosely bound valence electrons are present in \(Si\) as compared to \(C\).
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365602
Among the following,the wrong statement in the case of semiconductor is
1 Resistivity is in between that of a conductor and insulator
2 Temperature coefficient of resistance is negative
3 Doping increases conductivity
4 At absolute zero temperature it behaves like a conductor
Explanation:
Conceptual Question
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365603
In intrinsic semiconductor at room temperature, number of electrons and holes are
1 equal
2 zero
3 unequal
4 infinite
Explanation:
At room temperature, due to thermal vibrations, the few bonds of intrinsic semiconductor are broken, producing equal number of electrons and holes in the semiconductor.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365604
At zero Kelvin a piece of germanium
1 Becomes good conductor
2 Becomes semiconductor
3 Has maximum conductivity
4 Becomes bad conductor
Explanation:
At zero Kelvin, there is no thermal agitation and therefore no electrons from valence band are able to shift to conduction band.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365601
\(C\) and \(Si\) both have same lattice structure, having 4 bonding electrons in each. However, \(C\) is insulator whereas \(Si\) is intrinsic semiconductor. This is because
1 The four bonding electrons in the case of \(C\) lie in the second orbit, whereas in the case of \(Si\) they lie in the third.
2 In case of \(C\), the valence bond is not completely filled at absolute zero temperature
3 In case of \(C\), the conduction band is partly filled even at absolute zero temperature
4 The four bonding electrons in the case of \(C\) lie in the third orbit, whereas for \(Si\) they lie in the fourth orbit
Explanation:
The four bonding electrons in the case of \(C\) lie in the second orbit. Whereas in case of \(Si\) they lie in the third orbit. So loosely bound valence electrons are present in \(Si\) as compared to \(C\).
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365602
Among the following,the wrong statement in the case of semiconductor is
1 Resistivity is in between that of a conductor and insulator
2 Temperature coefficient of resistance is negative
3 Doping increases conductivity
4 At absolute zero temperature it behaves like a conductor
Explanation:
Conceptual Question
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365603
In intrinsic semiconductor at room temperature, number of electrons and holes are
1 equal
2 zero
3 unequal
4 infinite
Explanation:
At room temperature, due to thermal vibrations, the few bonds of intrinsic semiconductor are broken, producing equal number of electrons and holes in the semiconductor.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365604
At zero Kelvin a piece of germanium
1 Becomes good conductor
2 Becomes semiconductor
3 Has maximum conductivity
4 Becomes bad conductor
Explanation:
At zero Kelvin, there is no thermal agitation and therefore no electrons from valence band are able to shift to conduction band.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365601
\(C\) and \(Si\) both have same lattice structure, having 4 bonding electrons in each. However, \(C\) is insulator whereas \(Si\) is intrinsic semiconductor. This is because
1 The four bonding electrons in the case of \(C\) lie in the second orbit, whereas in the case of \(Si\) they lie in the third.
2 In case of \(C\), the valence bond is not completely filled at absolute zero temperature
3 In case of \(C\), the conduction band is partly filled even at absolute zero temperature
4 The four bonding electrons in the case of \(C\) lie in the third orbit, whereas for \(Si\) they lie in the fourth orbit
Explanation:
The four bonding electrons in the case of \(C\) lie in the second orbit. Whereas in case of \(Si\) they lie in the third orbit. So loosely bound valence electrons are present in \(Si\) as compared to \(C\).
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365602
Among the following,the wrong statement in the case of semiconductor is
1 Resistivity is in between that of a conductor and insulator
2 Temperature coefficient of resistance is negative
3 Doping increases conductivity
4 At absolute zero temperature it behaves like a conductor
Explanation:
Conceptual Question
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365603
In intrinsic semiconductor at room temperature, number of electrons and holes are
1 equal
2 zero
3 unequal
4 infinite
Explanation:
At room temperature, due to thermal vibrations, the few bonds of intrinsic semiconductor are broken, producing equal number of electrons and holes in the semiconductor.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365604
At zero Kelvin a piece of germanium
1 Becomes good conductor
2 Becomes semiconductor
3 Has maximum conductivity
4 Becomes bad conductor
Explanation:
At zero Kelvin, there is no thermal agitation and therefore no electrons from valence band are able to shift to conduction band.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365601
\(C\) and \(Si\) both have same lattice structure, having 4 bonding electrons in each. However, \(C\) is insulator whereas \(Si\) is intrinsic semiconductor. This is because
1 The four bonding electrons in the case of \(C\) lie in the second orbit, whereas in the case of \(Si\) they lie in the third.
2 In case of \(C\), the valence bond is not completely filled at absolute zero temperature
3 In case of \(C\), the conduction band is partly filled even at absolute zero temperature
4 The four bonding electrons in the case of \(C\) lie in the third orbit, whereas for \(Si\) they lie in the fourth orbit
Explanation:
The four bonding electrons in the case of \(C\) lie in the second orbit. Whereas in case of \(Si\) they lie in the third orbit. So loosely bound valence electrons are present in \(Si\) as compared to \(C\).
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365602
Among the following,the wrong statement in the case of semiconductor is
1 Resistivity is in between that of a conductor and insulator
2 Temperature coefficient of resistance is negative
3 Doping increases conductivity
4 At absolute zero temperature it behaves like a conductor
Explanation:
Conceptual Question
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365603
In intrinsic semiconductor at room temperature, number of electrons and holes are
1 equal
2 zero
3 unequal
4 infinite
Explanation:
At room temperature, due to thermal vibrations, the few bonds of intrinsic semiconductor are broken, producing equal number of electrons and holes in the semiconductor.
PHXII14:SEMICONDUCTOR ELECTRONICS- MATERIALS- DEVICES AND SIMPLE CIRCUITS
365604
At zero Kelvin a piece of germanium
1 Becomes good conductor
2 Becomes semiconductor
3 Has maximum conductivity
4 Becomes bad conductor
Explanation:
At zero Kelvin, there is no thermal agitation and therefore no electrons from valence band are able to shift to conduction band.
