If the p-n junction diode is unbiased, (a) n-type side has lower potential than p-type side. (b) n-type side has same potential as p-type side. (c) An electric field is established at the junction such that n side is at positive voltage relative to p - side. (d) The potential across the junction is such that p -side is at positive voltage relative to n-side

Answer: (c). In an unbiased junction the depletion layer has positive donor ions on the n side and negative acceptor ions on the p side. So the n side is at positive voltage relative to the p side; the field points from n to p. So the answer is (c).

If the p-n junction diode is unbiased, | MHT CET 2024 (16 May, Shift 1)

Q42MHT CET 2024 · 16 MAY · SHIFT 1Medium

P-N Junction Diode

If the $p\text{-}n$ junction diode is unbiased,

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Answer: (c)

In an unbiased junction the depletion layer has positive donor ions on the n side and negative acceptor ions on the p side.
So the n side is at positive voltage relative to the p side; the field points from n to p.
So the answer is (c).

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