Question

a semi condustor acts as a pure insulator at ​

Answer 1

Answer:

A semiconductor behaves like a insulator at 0 Kelvin.

Explanation:

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Answer 2

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A semiconductor acts like an ideal insulator at absolute zero temperature that is at zero kelvin. It is because the free electrons in the valence band of semiconductors will not carry enough thermal energy to overcome the forbidden energy gap at absolute zero.