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Statement of a problem № 3923

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A current I is passed through a coaxial cable with inner radius a and outer radius b. The cable can function both as a capacitor and as an inductor. If the stored electric and magnetic energy is equal then show that the resistance R is approximately given by R=377/2pi ln(b/a)S

Solution:
A current I is passed through a coaxial cable with inner radius a and outer radi

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