Plugging B=0(H+M) Into 00P V×B=10(Jf+60。E+ +V×M) t at we get 00P V×H=Jf+60aE+ t at J D ot
Example: Dielectric-Filled Parallel-Plate Capacitor It is connected across a alternating source v and contains a slightly conducting dielectric with a per- mittivity Er 0 and a conductivity o.(neglecting the side effects) J aD or Figure 19-1 Parallel-plate capacitor connected to a source of alternating voltage The current J,+aD/dr gives an azimuthal magnetic field B
What is the magnetic induction inside the capacitor? B=? Remember that the material inside is dielectric but not magnetic, so M=0, and B=10(H+M)=10H, therefore the maxwell equation VXH=动 01 is simplified as V×B=10(Jf+ OD at Integrating this over an area s