Problem 4.147

A circuit consists of a capacitor with capacitance $C$ and a coil with active resistance $R$ and inductance $L$ connected in parallel. Find the impedance of the circuit at frequency $\omega$ of alternating voltage.

Z=\sqrt{\frac{R^{2}+\omega^{2} L^{2}}{(\omega C R)^{2}+\left(1-\omega^{2} C L\right)^{2}}}

Electric Oscillations