Hey, does impedance vary with time in a simple R-L AC circuit?


Series circuit

1 Answer

  • 2 months ago
    Favourite 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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