Interested to Buy Any Domain ? << Click Here >> for more details...
Why does a semicondctor act as an insulator at 0'k and why its conductivity increases with increasing temperature?
- 8 Answers
- 59287 Views
- I also Faced
- E-Mail Answers
Answer Posted / kavita
At 0k,electrons do not have sufficient energy to jump from
valance band to conduction band and therefore it acts as an
insulator.
As the temperature increases, electrons get energy to pass
from valance band to conduction band making it to conduct.
As the temperature increases further more and more electrons
get energy and crosses the forbidden energy gap increasing
the conductivity.
| Is This Answer Correct ? | 235 Yes | 14 No |
Post New Answer View All Answers
What is a synthesizer?
Tell me what is radium used for?
what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?
Tell me what is ion pair energy?
Dear sir, I appeared for the interview for the post of SCIENTIST/ENGINEER 'SC'in ISRO on 02/12/2009. when the resluts will be announced??
When a green colored object is illuminated by a green light it will appear as what color to the human eye?
What is the physical significance of biot numbers?
Which is the sound wave that is below the human hearing?
a car starts from rest with uniform acceleration "a" for sometime and then with uniform retardation "b" and comes to rest. The time of motion is "t". find the maximum velocity attained by it?
What is constructive interfernce?
The velocity of sound in gas depends upon what?
This person established the one fluid theory of electricity and performed some of the first investigations into electrical grounding and insulation:
If f equals electric force, and q and q (read as: q-prime) are the charges on two particles, the expression f is proportional to q times q prime divided by distancesquared is what law?
Explain the characteristics of dead stars?
I want to prepare a frequency generator. the specifications i.e. output requirements are 12V, 1-10A & frequency upto 1K to 5K. Please, inform me with proper circuit dig. & the component values.
