E-J characteristics in a Bi-2223 silver-sheathed tape wire were estimated in the range of a very low electric field by analyzing a relaxation of the magnetization in a magnet field parallel to the c-axis measured by using a SQUID magnetometer. The scaling of the E-J characteristics was examined, and the result was compared with the theoretical analysis based on the flux creep-flow model in which the distribution of flux-pinning strength was considered. It was found that the experimental result on the E-J characteristics was approximately explained by the theory, though a good agreement was not obtained for the scaling parameters.
