COMEDK · Physics · 30. Semiconductors
Identify the property which is not characteristic for a semi-conductor.
- A At a very low temperatures it behaves like an insulator.
- B At higher temperatures two types of charge carriers will cauise conductivity.
- C The charge carriers are electrons and holes in the valance band at higher temperatures.
- D The semiconductor is electrically neutral.
Answer & Solution
Correct Answer
(A) At a very low temperatures it behaves like an insulator.
Step-by-step Solution
Detailed explanation
A semiconductor acts like an insulator only at absolute temperature i.e. \(0^{\circ} \mathrm{K}\). It is because the free electrons in the valence band of semiconductor will not carry enough thermal energy to overcome the forbidden energy gap at absolute zero. Hence, option (a)…
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