  We investigate the extent to which the nuclear transverse response to
electron scattering in the quasielastic region, evaluated in the random-phase
approximation can be described by ring approximation calculations. Different
effective interactions based on a standard model of the type g'+V_pi+V_rho are
employed. For each momentum transfer, we have obtained the value of g'_0
permitting the ring response to match the position of the peak and/or the
non-energy weighted sum rule provided by the random-phase approach has been
obtained. It is found that, in general, it is not possible to reproduce both
magnitudes simultaneously for a given g'_0 value.
