II.Forces In Capacitors Area A e二3 (a) 0s=+8Ex=-+8y (Lower electrode) X q=cA=EEA=SVA =C(x)v C(x)=A X Area A Eo Vo (b) Figure 3-36 A parallel plate capacitor(a)immersed within a dielectric fluid or with (b)a free space region in series with a solid dielectric. Courtesy of Krieger Publishing.Used with permission. 6.641,Electromagnetic Fields,Forces,and Motion Lecture 12 Prof.Markus Zahn Page 3 of 96.641, Electromagnetic Fields, Forces, and Motion Lecture 12 Prof. Markus Zahn Page 3 of 9 II. Forces In Capacitors s x v = E= x + σ + ε ε (Lower electrode) σ ( ) ε ε s x vA q= A= E A= =C x v x ( ) εA Cx= x Courtesy of Krieger Publishing. Used with permission. Ex = V0 x