Fundamentals of Engineering Electromagnetics 1st Edition by David Cheng

Exercise 31

Consider a plane boundary ( y = 0) between air (region 1, r 1 = 1) and iron (region 2, r 2 = 5000).
a) Assuming B 1 = a x 2 a y 10(mT), find B 2 and the angle that B 2 makes with the interface.
b) Assuming B 2 = a x 10 + a y 2 (mT), find B 1 and the angle that B 1 makes with the normal to the interface.