A coaxial electric cable consists of a central core with a radius of 1 cm and a cylindrical shell with a radius of 1.5 cm, between which there is insulation. Derive a formula for the capacitance of such a cable and calculate the electrical capacitance of a 10 m long cable if the insulating material is rubber.
Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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