Hole is equivalent to:
Correct answer: B. A positive charge
- A. A neutral particle
- B. A positive charge
- C. A negative charge
- D. An electron
Explanation
In semiconductor physics, a "hole" is considered the absence of an electron in a covalent bond within the crystal lattice of a semiconductor material. It's often treated as a mobile positive charge carrier. Conceptually, a hole can be seen as a positively charged entity that moves within the crystal lattice in response to an applied electric field. It behaves as if it were a positively charged particle, even though it's essentially the absence of a negatively charged electron. In terms of electrical behavior, it can be mathematically treated as a positively charged carrier moving through the material.
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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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