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A 50 cm length of coaxial cable having an inner radius of 1 mm and an...

A 50 cm length of coaxial cable having an inner radius of 1 mm and an outer radius of 4 mm. The space between conductors is assumed to be filled with air. The total charge on the inner conductor is 20 nC. You are needed to find the charge density on each conductor, electric field E dan electric-flux density D.

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