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Why does a semicondctor act as an insulator at 0'k and why its conductivity increases with increasing temperature?
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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 |
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