JEE Main 2004 Physics question

Physics Semiconductor Electronics JEE Main 2004

When p-n junction diode is forward biased

(1)the depletion region is reduced and barrier height is increased
(2)the depletion region is widened and barrier height is reduced
(3)both the depletion region and barrier height reducedCorrect
(4)both the depletion region and barrier height increased.

Answer: (3)

Solution

Forward bias opposes the built-in potential: the barrier height decreases and majority carriers are pushed towards the junction,

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Question ID VK-038361