In a unbiased \( p-n \) junction, holes diffuse from the P \( \math...

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In a unbiased \( p-n \) junction, holes diffuse from the
P
\( \mathrm{p} \)-region to \( \mathrm{n} \) region because:
W
(1) free electrons in the n-region attract them.
(2) hole concentrations in p-region is more as compared to n-region.
(3) they move across the junction with same potential
(4) All of the above
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