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The increase in the width of the depletion region in a p-n junction diode is due to:

1. reverse bias only
2. both forward bias and reverse bias
3. increase in forward current
4. forward bias only

Correct answer: reverse bias only

Solution

The width of the depletion region in a p-n junction diode increases under reverse bias because the applied voltage widens the region by pulling majority carriers away from the junction.

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