Maxwell’s Equations Preface
• Henceforth, we shall examine situations where electric and magnetic fields are dynamic, or time varying. It should be mentioned first that in static EM fields, electric and magnetic fields are independent of each other whereas in dynamic EM fields, the two fields are interdependent. In other words, a time-varying electric field necessarily involves a corresponding time-varying magnetic field. • Second, time-varying EM fields, represented by E(x, y, z, t) and H(x, y, z, t), are of more practical value than static EM fields. However, familiarity with static fields p
↧