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- billrussell42Lv 72 months agoFavourite answer
no, the impedance is a complex number that does not vary with time. It is typically expressed in terms of resistance, inductance, and capacitance.

However, if you express it in ohms with a j component, it does very with frequency.

For a series circuit of a resistor R, a capacitor C and

an inductor L, the impedance may be calculated as follows:

Capacitive Reactance Xc = 1/(2πfC) = 1/ωC

Inductive Reactance Xʟ = 2πfL = ωL

Impedance Z = √(R² + X²)

where X = Xʟ – Xc

ω = 2πf

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