The reactance of a capacitor XC in an ac circuit varies with frequency f of the source voltage . Which one of the following represents this variation correctly?

The reactance of a capacitor X_C in an ac circuit varies with frequency f of the source voltage . Which one of the following represents this variation correctly?

A
B
C
D

Solution:

$X_{c} = \frac{1}{ω C} = \frac{1}{2 πfC}$

$X_{c} \propto \frac{1}{f}$

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