A square current loop is positioned between two long, straight wires carrying currents I...

A square current loop is positioned between two long, straight wires carrying currents I as shown in Figure P20.103. All the wires lie in the same plane, and two sides of the loop are parallel to the long wires. If the current loop is placed precisely in the middle between the two long wires, the net force be (i) to the left, (ii) to the right, (iii) toward the top of the page, or (iv) toward the bottom of the page? (b) Repeat part (a), but now suppose the direction of the current is the loop is reversed (i.e., opposite that shown in the figure).