A) widens the depletion zone.
B) increases the potential difference across the depletion zone.
C) increases the number of donors on the n side.
D) increases the electric field in the depletion zone.
Correct Answer: C
Solution :
Number of donors is more because electrons from - ve terminal of the cell pushes (enters) the n-side and decreases the number of uncompensated pentavalent ion due to which potential barrier is reduced. The neutralised pentavalent atom are again in position to donate electrons.
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