% Author: Dr. Matthias Jung, DL9MJ, Stephan Kregel, DG1HXJ
% Year: 2022
\begin{circuitikz}
    \draw(0,1) node[circ]{}
               to [battery2,-*,l={\qty{1,5}{\V}}] ++(3,0) coordinate(n1)
               to [open,-*] ++(3,0) coordinate(n2)
               to [short] ++(0,-2)
               to [rmeter, t=V, l_={?}] ++(-6,0)
               to [short] ++(0,2);

    \draw (n2) to [battery2,-*,l_={\qty{1,5}{\V}}] (n1);
\end{circuitikz}