Capacitance of a Cylindrical Power CableElectrical Power Cable is a very popular example of cylindrical capacitor. In a power cable, there is a conductor at the center surrounding which there is insulating layer. Outer surface of the cable is generally covered with metallic cover which is grounded.Let us also consider, at any instant due to current in the conductor, the charge of the cable is Q coulomb per meter. The radius of conductor and outer radius of cable are r1 and r2 respectively.Now fo