An infinitely long straight wire carrying current I, one side opened rectangular loop and a conductor C with a sliding connector are located in the same plane, as shown in the figure. The connector has length $$l$$ and resistance $$R$$. It slides to the right with a velocity $$v$$. The resistance of the conductor and the self inductance of the loop are negligible. The induced current in the loop, as a function of separation $$r$$, between the connector and the straight wire is: