A coaxial capacitor contains two concentric, conductive cylindrical surfaces, one with gauge diameter and the other with radius as seen in Figure 2. The insulating layer separating the two conductive...

A coaxial capacitor contains two concentric, conductive cylindrical surfaces, one with gauge diameter and the other with radius as seen in Figure 2. The insulating layer separating the two conductive surfaces is divided into two semi-cylindrical sections, one filled with dielectric ?1 and the other filled with dielectric ?2.

(a) Express the length l and the capacitance of this capacitor in terms of the given quantities.

(b) Calculate the value of C for a=4mm, b=12mm,??1=4, ??2=8 and l=8cm