A wire is bent into three circular segments of radius r = 10.4 cm, as shown in Fig. 34-55 below. Each segment is a quadrant of a circle, ab lying in the xy plane, bc lying in the yz plane, and ca lying in the zx plane. (a) If a uniform magnetic field B points in the positive x direction, find the emf developed in the wire when B increases at the rate of 3.32 mT/s. (b) What is the direction of the current in the segment bc?