In this paper the effect of field sweep-rate on the fluctuation field
(H-f) is examined. Measurements of H-f for a CrO2 medium at different
values of sweep rates (R) show that H-f is independent of R when the d
ata is analyzed according to the equation of state model. These result
s agree with the theoretical treatment of the problem that also show H
-f independent of field sweep-rate.