The figure shows a circuit having eight resistances of \(1\,\Omega\) each, labelled \(R_1\) to \(R_8\), and two ideal batteries with voltages \( \varepsilon_1 = 12\,\text{V} \) and \( \varepsilon_2 = 6\,\text{V} \).
Which of the following statement(s) is(are) correct?
