Question

a semi condutor acts like 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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At room temperature, a semiconductor has enough free electrons to allow it to conduct current. At or close to absolute zero a semiconductor behaves like an insulator. When an electron gains enough energy to participate in conduction (is "free"), it is at a high energy state.