Swept-out voltage in PIN diode happens when PIN diode is

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A. Forward biased and the thickness of the depletion layer decreases till I-region becomes free of mobile carriers

B. Reverse biased and the thickness of the depletion layer increases till I-region becomes free of mobile carriers

C. Forward biased and the thickness of the depletion layer increases till I-region becomes free of mobile carriers

D. Reverse biased and the thickness of the depletion layer decreases till I-region becomes free of mobile carriers

Answer: Option B

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