Along straight stationary wire is parallel to the y axis and passes through the point z = h on the z axis. a current i flows in this wire, returning by a remote conductor whose field we may neglect. lying in the xy plane is a square loop with two of its sides, of length b, parallel to the long wire. this loop slides with constant speed v in the xˆ direction. find the magnitude of the electromotive force induced in the loop at the moment when the center of the loop crosses the y axis.