ugging B=10(H+M), Into a OP V×B=0(Jf+∈0。E+ a+V×M we get a OP V×H=Jf+0。E+ ot J OD 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 erco and a conductivity o.(neglecting the side effects D 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=0(H+M)=0H, therefore the maxwell equation OD Y×H=Jf+ at is simplified as OD V×B=10(Jf+ at Integrating this over an area s