Consistency between the Lorentz-force independence of the resistive transition in the high-Tc superconductors and the standard theory of flux flow.

In a uniform flux-flow state of a type-II superconductor, (i) the resistivity tensor p,~ is independent of the dissipative transport current density J, and (ii) there exists a constraint on the relative orientation of J and the average Aux density B. These two simple general properties can already account for the Lorentz-force independence of the resistive transition in high-T superconductors for the applied current in the ab plane, and the magnetic Beld making any not-too-small angle with this plane.