% Author: Dr. Matthias Jung, DL9MJ
% Year: 2022
\begin{circuitikz}
    \useasboundingbox (-0.5,-0.5) rectangle (2.5,2.5);
    \draw (0,0) to [battery2, invert] ++(0,2)
                to [short] ++(2,0)
                to [R] ++(0,-2)
                to [short, i<={$I$}] (0,0);
\end{circuitikz}