A 40-m-long aluminum ( = 3.5 X 10 7 S/m, r = 1, r =
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A 40-m-long aluminum (σ = 3.5 X 107 S/m, μr = 1, εr = 1) pipe with inner and outer radii 9 mm and 12 mm carries a total current of 6 sin 106 πt A. Find the skin depth and the effective resistance of the pipe.
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