在 circuitikz 环境中在曲线上插入元件

Question

请考虑以下 MWE：

\documentclass[border={1mm},multi=circuitikz]{standalone}

\usepackage[europeanresistors,siunitx]{circuitikz}

\begin{document}
\begin{circuitikz}

\coordinate (N1) at (0,0);
\coordinate (N2) at (0,-4);
\coordinate (N3) at (-4,-4);
\coordinate (N4) at (0,-8);

\draw (N1)to [R,o-o](N2);
\draw (N2)to [R,o-o](N4);
\draw (N4)to [R,o-o](N3);
\draw (N3)to [R,o-o](N1);
\draw (N2)to [R,o-o](N3);
\draw (N1)to [R,o-o,bend left=60](N4);

\end{circuitikz}
\end{document}

这是输出：

但是曲线上没有任何元件!?

Answer 1

可能是这样的

\documentclass[border={1mm},multi=circuitikz]{standalone}

\usepackage[europeanresistors,siunitx]{circuitikz}

\begin{document}
\begin{circuitikz}

\coordinate (N1) at (0,0);
\coordinate (N2) at (0,-4);
\coordinate (N3) at (-4,-4);
\coordinate (N4) at (0,-8);

\draw (N1)to [R,o-o](N2);
\draw (N2)to [R,o-o](N4);
\draw (N4)to [R,o-o](N3);
\draw (N3)to [R,o-o](N1);
\draw (N2)to [R,o-o](N3);
\draw (N1)to  [bend left] (2,-3) to[R] (2,-5) to [bend left] (N4);

\end{circuitikz}
\end{document}