13. A conducting bar of length I rotates with a constant angular speed w about pivot at one end. A uniform magnetic fieldis directed perpendicular to the plane of rotation as shown. Find the motional emf induced between the ends of bar. xBx dr

15. The magnitude of the electric field between the two circular parallel plates in the figure is E = (4.0 × 105) - (6.0 x 104t), with E in volts per meter and t in seconds. At t = 0, is upward. The plate area is 6.0 x 10-2 m². For t≥ 0, what is the magnitude of the displacement current between the plates?

13. A conducting bar of length I rotates with a constant angular speed w about pivot at one end. A uniform magnetic fieldis directed perpendicular to the plane of rotation as shown. Find the motional emf induced between the ends of bar. xBx dr

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