Ring vortices are induced after the passage of an axial current through a stagnant conducting liquid contained between two concentric, corrugated glass tubes with a strong current flowing along the common axis of the tubes. Experiments have been conducted using transparent aqueous solution of copper sulfate suspended with fine aluminum powder for flow visualization. Flow patterns are photographed for the cases that the sinusoidal deformations on the tube walls are either in phase or completely out of phase, and one of the tubes is straight. The result agrees considerably well with that obtained previously from a linearized theory.