Question

What is the value of impedance at resonances

Answer 1

Answer:

Resonance is the result of oscillations in a circuit as stored energy is passed from the inductor to the capacitor. Resonance occurs when XL = XC and the imaginary part of the transfer function is zero. At resonance the impedance of the circuit is equal to the resistance value as Z = R.

Answer 2

Explanation:

Impedance means the net resistance.

Z = √{R^2 + (XL-Xc )^2}

where, XL = wL (inductive resistance)

Xc = 1/wc( capacitive resistance)

At resonance XL = Xc

so Z = R