Imagine a world where free magnetic charges exist. In this world, a circuit is made with a $U$ shape wire and a rod free to slide on it. A current carried by free magnetic charges can flow in the circuit. When the circuit is placed in a uniform electric field, $E$ perpendicular to the plane (inward) of the circuit and the rod is pulled to the right with a constant speed $v,$ the "magnetic EMF" in the current and the direction of the corresponding current, arising because of changing electric flux will be ($l$ is the length of the rod and $c$ is speed of light ).