Six lead acid type of secondary cells each of emf $2.0V$ and internal resistance $0.015\Omega$ are joined in series to provide a supply to a resistance of $8.5 \Omega$ What are the current drawn from the supply and its terminal voltage ?

Question

$\begin{array}{1 1} 10.9\;V \\ 11.9\;V \\ 9.9\;V \\ 12.9\;V \end{array}$