The unification of electric and magnetic fields and the introduction of displacement current.
Try to set up the problem yourself. Even if you get stuck, the act of trying makes your brain more receptive to the solution. 1000 solved problems in electromagnetism pdf
Wave propagation in lossy and lossless media, Poynting vector, and reflection/refraction at interfaces. The unification of electric and magnetic fields and
The Biot-Savart Law, Ampere’s Circuital Law, and magnetic flux density. Ampere’s Circuital Law
Coulomb’s Law, electric field intensity, and the application of Gauss’s Law for various charge distributions.