  In the context of experimental advances in the realization of artificial
magnetic fields in quantum gases, we discuss feasible schemes to extend
measurements of the Hall polarization to a study of the Hall voltage, allowing
for direct comparison with solid state systems. Specifically, for the
paradigmatic example of interacting flux ladders, we report on characteristic
zero crossings and a remarkable robustness of the Hall voltage with respect to
interaction strengths, particle fillings, and ladder geometries, which is
unobservable in the Hall polarization. Moreover, we investigate the
site-resolved Hall response in spatially inhomogeneous quantum phases.
