As reverse bias voltage increases transition capacitance __________(a) Increases(b) Decreases(c) Doesn’t depend upon voltage(d) ConstantThis question was posed to me during an internship interview.The doubt is from Transition Capacitance topic in portion Diode Circuit of Analog Circuits

As reverse bias voltage increases transition capacitance __________(a)

1.	As reverse bias voltage increases transition capacitance __________(a) Increases(b) Decreases(c) Doesn’t depend upon voltage(d) ConstantThis question was posed to me during an internship interview.The doubt is from Transition Capacitance topic in portion Diode Circuit of Analog Circuits
Answer» Right ANSWER is (b) DECREASES The explanation: Transition capacitance is the capacitance exhibited by a diode due to the p-side and n-side of the diode is separated by a distance of depletion WIDTH same as in an electrolytic capacitor. The equation of transition capacitance = ƸA/W Where Ƹ = permittivity of the MATERIAL of diode, W = depletion width A = area of CROSS section As reverse bias increases depletion width also increases hence transition capacitance decreases.

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