Majority carriers in N-type substances are:
Correct answer: C. Electrons
- A. Protons
- B. Holes
- C. Electrons
- D. Positive ions
Explanation
In N-type semiconductors, the majority carriers are negatively charged electrons. When pentavalent impurities, such as phosphorus or arsenic, are introduced into the crystal lattice of a semiconductor like silicon or germanium, they provide extra electrons to the material. These extra electrons become the majority charge carriers in N-type semiconductors, conducting electricity by moving through the crystal lattice.
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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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