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A circular section coaxial cable has a composite dielectric material inside. The inner conductor has an...

A circular section coaxial cable has a composite dielectric material inside. The inner conductor has an outer radius a and is surrounded by a dielectric of dielectric constant of ε1 that reaches the radius b. Then comes another dielectric of constant ε2 until it reaches the external conductor of radius c. If a potential difference V0 is established between the two conductors. Calculate the polarization vector of each dielectric, and the capacitance per unit length.

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