Which of the following materials is a tetravalent semi-conductor?
Correct answer: D. Germanium
- A. Barium
- B. Sodium
- C. Aluminium
- D. Germanium
Explanation
Germanium is the correct answer because it is a tetravalent semiconductor, meaning it has four valence electrons. Barium, Sodium, and Aluminium are not tetravalent semiconductors as they have different valence electron configurations.
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A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
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