The depletion region in PN-Junction carries
Correct answer: D. No mobile charge carrier
- A. Positively charge
- B. Negatively charge
- C. Both positively and negatively charge
- D. No mobile charge carrier
Explanation
Correct option is (d) No mobile charge carrier. This option is the correct one. The depletion region in a PN-junction does not contain any mobile charge carriers. During the formation of the PN-junction, the diffusion of charge carriers (electrons and holes) across the junction leads to the creation of the depletion region. This region is depleted of majority charge carriers, resulting in a barrier to the flow of current. The depletion region contains immobile ions, but they do not contribute to any current flow.
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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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