When an N-type semiconductor is heated:
Correct answer: D. Number of electrons and holes increases equally
- A. The number of electrons increases while that of holes decreases
- B. The number of holes increases while that of electrons decreases
- C. Number of electrons and holes remains the same
- D. Number of electrons and holes increases equally
Explanation
Due to bond cleavage, an electron-hole pair is always produced. Heating an N-type semiconductor generates equal numbers of electron-hole pairs due to thermal energy.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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