Does capacitance change with frequency?

1 Answer
Mar 6, 2018

No, Capacitance does not change with frequency.

Explanation:

Capacitance of a capacitor is given as:
C=Q/V
It is simply the charge stored on the plates of a capacitor per unit voltage.

however, if you talk about the Capacitive Reactance X_c of a circuit, it indeed depends upon the frequency.

Capacitive reactance is given as:
X_c = 1/(2pifC)

Thus, it is the Capacitive Reactance and NOT the Capacitance which depends upon Frequency.