If positive terminal of the battery is connected to n-type and negative terminal is connected to p-type then diode is:
Correct answer: B. Reverse biased
- A. Forward biased
- B. Reverse biased
- C. Zero biased
- D. Not biased
Explanation
If the positive terminal of the battery is connected to the n-type and the negative terminal is connected to the p-type, the diode is said to be reverse biased. In a reverse-biias configuration, the external voltage pulls electrons away from the junction in the n-type and holes away in the p-type, widening the depletion region and preventing current flow (except a very small leakage current).
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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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