Question

why reverse bias condition of the diode is done

Answer 1

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The process by which, a p-n junction diode blocks the electric current in the presence of applied voltage is called reverse biased p-n junction diode.
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Answer 2

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• The net result is that the depletion layer grows wider due to a lack of electrons and holes and presents a high impedance path, almost an insulator.
• The result is that a high potential barrier is created thus preventing current from flowing through the semiconductor material.

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