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Q.

In an unbiased P-N Junction diode, the net charge in the P-region is

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a

Negative

b

Depending upon dope concentration may be positive or negative.

c

Zero

d

Positive

answer is C.

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Detailed Solution

Free electrons from N-region diffuse into P-region and recombine with holes within depletion layer. So the excess charge in the P-region is negative.

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In an unbiased P-N Junction diode, the net charge in the P-region is