Idra wraps a wire around a plastic tube and connects the ends of the wires to a device that measures electric current. when she slides a bar magnet through the tube, north pole first, she sees that a small amount of electric current is produced in the wire. she slides three more bar magnets through the tube north pole first, and a small amount of electric current is produced in the wire each time. predict how the current will change if idra slides the bar magnets through the tube south pole first.