Near absolute zero temperature pure semi-conductors behave like:
Correct answer: C. Insulators
- A. Conductors
- B. Metals
- C. Insulators
- D. None of these
Explanation
Near absolute zero temperature, pure semiconductors behave more like insulators. At extremely low temperatures, most of the electrons are bound tightly in the valence band, and very few are able to overcome the energy gap to move into the conduction band. This lack of available electrons in the conduction band results in minimal conductivity, similar to how insulators behave due to the absence of free charge carriers at normal temperatures.
Last updated
About Electronics
A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
Practise Electronics
660 free Electronics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 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
(7) In n-p-n transistor, p works as: (Tag: Electronics sub-tag: Transistors )
A capacitor and an inductor are connected to the A.C. supply. If we double the frequency of the A.C. supply then the effect on the reactance of capacitor XC and reactance of inductor XL will be:
A capacitor is to be used to provide smoothing for a half wave rectifier. In which of the following diagrams is capacitor correctly connected?
A changing electric flux develops in the region:
A circuit that adds positive or negative voltage to an input sine wave is called _.