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What is the hole current in the p region of the diode?

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What is the hole current in the p region of the diode?

(a) Ipp (x)=I-Inp (x)

(b) Ipp (x)=I+Inp (x)

(c) Ipp (x)=-I-Inp (x)

(d) Ipp (x)=-I+Inp (x)

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Question is from The Current Components in a P-N junction diode in chapter Semiconductor-Diode Characteristics of Electronic Devices & Circuits

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The correct answer is (a) Ipp (x)=I-Inp (x)

Explanation: The hole current in the p region is equal to the total current minus the minority electrons in the p region.

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