At room temperature, an intrinsic semiconductor has_______________?
Correct answer: B. A few free electrons and holes
- A. Many holes only
- B. A few free electrons and holes
- C. Many free electrons only
- D. No holes or free electrons
Explanation
An intrinsic semiconductor has equal numbers of thermally generated free electrons and holes; at room temperature their concentration is relatively small. Thus it has a few of both types of carriers, not one type alone.
Last updated
Practise Electronics and Devices
758 free Electronics and Devices MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
Thermal voltage VT can be given by____________?
The output power of the cascaded amplifier / attenuator system can be determined using___________?
In BJT, the forward biased base emitter junction inject holes from base to emitter, the holes_______?
In radiative coupling, the emitter radiation field_____________?
Any electrical signal present in a circuit other than the desired signal is known as______________?