Physics - Semiconductors Question with Solution | TestHub
PhysicsSemiconductorsPhysics of semiconductorMedium2 minQB
PhysicsMediummultiple choice
When an electric field is applied across a semiconductor
Take the energy of a hole as the energy of the vacant valence-band electron state it occupies.
Options:(select one or more)
Answer:
A, C
Solution:
A hole is a vacant valence-band state. Its energy is taken as the energy of the valence-band electron state it occupies.
Under the field, an electron from a lower valence level fills a vacancy at a higher level.
The vacancy is left at the lower level, so the hole moves from a higher to a lower energy level. C is correct, D is wrong.
In the conduction band, electrons move from lower to higher energy levels. A is correct, B is wrong.
Answer: A and C.
Stream:JEESubject:PhysicsTopic:SemiconductorsSubtopic:Physics of semiconductor
⏱ 2mℹ️ Source: QB
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