Problem 4 Due May 7

(3)   Use Eqs. 11.93 in the text to derive Eq. (11.98)   (5 points)

(4) Consider Home work assignment (1) where you calculated the magnetic field at the given point. You wish to calculate all electromagnetic fields at that same point, but you are stationary in a coordinate system that is moving at half the speed of light, along
the z direction (see Fig. 5.5).  Find all fields at that point when you find that the origin of your system is 1 meter from the origin of ring current.

(10) points.