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MCQ Practice Question

Electronic Devices & Circuits PN Junction Diode

The junction capacitance of a reverse-biased PN diode generally does what as reverse-bias magnitude increases?

ADecreases
BIncreases without limit
CRemains exactly constant
DBecomes negative

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Correct Answer: A. Decreases

Explanation: Increasing reverse bias widens the depletion region. Since junction capacitance is inversely related to depletion width, the capacitance decreases.

Reference: Standard semiconductor electronics: transition capacitance

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