% Author: Prof. Dr. Mathtias Jung, DL9MJ
% Year: 2025
\begin{circuitikz}
    \tikzset{german switch/.style={
        cute open switch, 
        bipoles/cuteswitch/thickness=0.2,
        bipoles/cuteswitch/shape=circ,
        bipoles/cuteswitch/width=0.7,
    }}
    \draw (0,0) 
        to [battery2, invert, v<={$U$}] ++(0,2)
        to [R, l={$R$}, v={$U_R$}] ++(4,0)
        to [american inductor, l={$L$}, v={$U_L$}] ++(0,-2)
        to [german switch] (0,0);
\end{circuitikz}