Forward current through a semi conductor diode circuit is due to____________?
Correct answer: B. majority carriers
- A. minority carriers
- B. majority carriers
- C. holes
- D. electron
Explanation
In forward bias, the potential barrier and depletion width decrease, allowing the abundant majority carriers to cross the junction and produce current. Electrons and holes are both involved, but neither is always the correct single answer because their roles depend on whether the material is n-type or p-type. The likely mistake is choosing holes, since holes are often emphasised in discussions of p-type semiconductors.
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About PN Junction
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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