Square Loop 1 with side length \(a\) and square Loop 2 with side length \(2a\) are constructed from the same uniform conducting wire. Loop 1 is pulled at constant speed \(v\) completely out of a region containing a uniform magnetic field of magnitude \(B\), while Loop 2 is pulled at constant speed \(3v\) completely out of a region containing a uniform magnetic field of magnitude \(4B\). In both cases, the magnetic field is perpendicular to the plane of the loop. What is the ratio \(Q_2 / Q_1\) of the total electric charge that passes through a cross section of Loop 2 to that of Loop 1 during the process of exiting the field?