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In a good conductor, the energy gap between the conduction band and the valence band is –
The forbidden energy band gap in conductors, semiconductor and insulators are EG1, EG2 and EG3 respectively then –
Three semiconductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is –
P-type semiconductor is prepared by doping silicon or germanium semoconductor by –
N-type semiconductor is obtained when silicon or germanium is doped by –
The electrical conductivity of a pure silicon or germanium sample can be increased by
The addition of a very small quantity of aluminium to a silicon or germanium crystal makes it–
Doping of a semiconductor with small traces of impurity atoms generally changes the resistivity as follows–
An intrinsic semiconductor at the absolute zero of temperature–
The majority carriers of electricity in a N-type semiconductor are –
The addition of pentavalent impurity to a semiconductor creates more–
The width of the depletion layer in a P-N junction diode–
23 videos|89 docs|42 tests
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23 videos|89 docs|42 tests
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