Energy with Dielectrics (4.4.3)
Earlier, we calculated the energy required to assemble a [email protected] of charges. The
answer will be dierent in the presence of dielectric material, because there is
Currents and B Fields (5.2)
For now, well consider situa;ons with steady currents.
This means not only that J is constant,
but also that is constant.
The [email protected] condi;on implies that everywhere.