When a p-n junction diode is forward biased

CBSE Class 12 Physics 2025 All Sets Solved Paper

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Question : 10 of 16

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When a p-n junction diode is forward biased

The barrier height and the depletion layer width both increase.
The barrier height increases and the depletion layer width decreases.
The barrier height and the depletion layer width both decrease.
The barrier height decreases and the depletion layer width increases.

Solution:

When p-n junction is forward biased:
• The barrier potential decreases.
• The depletion layer width decreases due to carrier injection.

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