COMEDK · Physics · 30. Semiconductors
In an unbiased \(p\) - \(n\) junction
- A potential at \(p\) is more than that at \(n\)
- B potential at \(p\) is less than that at \(n\)
- C potential at \(p\) is equal to that at \(n\)
- D potential at \(p\) is + ve and that at \(n\) is - ve
Answer & Solution
Correct Answer
(B) potential at \(p\) is less than that at \(n\)
Step-by-step Solution
Detailed explanation
An unbiased \(p\) - \(n\) junction is shown below. From the diagram, it is clear that in depletion region, \(n\)-side has immobile positive charge, whereas \(p\)-side has immobile negative charge. Therefore, potential at \(n\) is less than that of \(n\).
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