Exercise 6B: Maxwell's equations applied to a plane wave 1. The figure shows a sea-of-arrows representation of a vector field, along with a coordinate system. Suppose that this is the electric field of a plane wave propagating in the positive z direction. Determine the magnetic field. 2. As in discussion question A, p. 90, figure out the direction and approximate relative strength of curl E at various points along the z axis. Describe this in terms such as "small +y." Do the same thing for the other functions. curl E curl B DE/Ot UB/0t 3. Verify qualitatively that curl E= curl B = OB Ot 18E and