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A diode is replaced with another diode of different material. The ratio of relative permittivity of new material to old is 0.5. The initial capacitance was 20pF, then final capacitance will be __________

A diode is replaced with another diode of different material. The ratio of relative permittivity of new material to old is 0.5. The initial capacitance was 20pF, then final capacitance will be __________ Correct Answer 10pF

The equation of transition capacitance = ƸA/W Where Ƹ = permittivity of the material of diode, W = depletion width A = area of cross section Since permittivity becomes half capacitance also halves.

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