I'm trying to draw toroid as shown in the left picture below but I can't quite get the terminals and arrows. I'm new to latex so any suggestion will be greatly appreciated. Is **decoration** library the right approach to drawing something like this?. I looked at the **circuitikz** package documentation and could not find anything to make a round coil.

[![enter image description here](https://i.stack.imgur.com/G8ZSZ.gif)](https://i.stack.imgur.com/G8ZSZ.gif)

**Code**

```
 \documentclass[border=3mm,
               tikz,
               ]{standalone}
\usetikzlibrary{decorations.pathmorphing}
\begin{document}

\begin{tikzpicture}[
    decoration={coil,amplitude=2mm,segment length=2.3mm}
                    ]
\draw                       (0,0)   circle  (2);
\draw                       (0,0)   circle (1.8);
\draw [thick,black](92:1.9) -- (92:2.6);
\draw [thick,black](443:1.9) -- (443:2.6);
\draw[decorate,thick,black] (92:1.9) arc   (92:443:1.9);

\end{tikzpicture}
    \end{document}

```