Regarding the RLC parallel circuit, this article will explain the information below. Equation, magnitude, vector diagram, and impedance phase angle of RLC parallel circuit impedance Impedance of the RLC parallel circuit An RLC parallel circuit is an electrical circuit consisting of a resistor \(R\), an inductor \(L\), and a capacitor \(C\) connected in parallel, driven by a voltage source or current source. The impedance \({\dot{Z}}_R\) of the resistor \(R\), the impedance \({\dot{Z}}_L\) of the inductor \(L\), and the impedance \({\dot{Z}}_C\) of the capacitor \(C\) can be expressed by the following equations: \begin{eqnarray}{\dot{Z}_R}&=&R\tag{1}\\\\{\dot{Z}_L}&=&jX_L=j{\omega}L\tag{2}\\\\{\dot{Z}_C}&=&-jX_C=-j\frac{1}{{\omega}C}=\frac{1}{j{\omega}C}\tag{3}\end{eqnarray} , where \({\omega}\) is the angular frequency, which ...