Explain why resistance of a semiconductor material decreases when its temperature is increased.
Answer
Answer
AIWritten by AI (gemini) - it can contain mistakes.
As temperature rises, a large number of electrons break their covalent bonds and cross the forbidden band gap into the conduction band. Thus, there are a large number of free electrons in the conduction band which results in a reduction in resistance.
From ISC 2027 Specimen Physics Paper 1, question 1(B)(vi).