In the case of semiconductors the valence and conduction bands have no overlap, energy gap is small
3) In the case of semiconductors the valence and conduction bands have
Answer is:
no overlap, energy gap is small
Explanation:
Related Electronic Devices and Communication MCQ with Answers
Answer is:
only serves as a vacant spot and cannot conduct current
Explanation:
Hole is a vacancy or lack of an electron and can travel through the material. It can only serves as a vacant spot and cannot conduct current
Answer is:
such that number of electrons is greater than the number of holes
Explanation:
An?intrinsic semiconductor?is an undoped semiconductor. This means that holes in the valence band are vacancies created by electrons that have been thermally excited to the conduction band, as opposed to doped?semiconductors?where holes or electrons are supplied by a ?foreign? atom acting as an impurity.
Answer is:
None of these
Explanation:
Doping?is the process of adding impurities to intrinsic semiconductors?to alter their properties. Normally Trivalent and Pentavalent elements are used to dope Silicon and Germanium. When a intrinsic semiconductor?is?doped?with Trivalent impurity it becomes a P-Type?semiconductor.
Answer is:
the actual motion of bound electrons
Explanation:
Motion of hole is a convenient way of describing the actual motion of bound electrons