When no bias is applied to a P-N junction,the | vedclass

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(A) In an unbiased $P-N$ junction,a depletion region is formed at the junction interface. This region creates a potential barrier that prevents the ne

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Zero because the number of charge carriers flowing on both sides is the same.

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(A) In an unbiased $P-N$ junction,a depletion region is formed at the junction interface. This region creates a potential barrier that prevents the net flow of charge carriers across the junction. Although individual charge carriers are in thermal motion,the number of electrons diffusing from the $N$-side to the $P$-side is exactly balanced by the number of electrons drifting from the $P$-side to the $N$-side (and similarly for holes). Therefore,the net current across the junction is zero.

When no bias is applied to a $P-N$ junction,the current is:

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