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The current density across a cylindrical conduct radius R varies in magnitude according to the...

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The current density across a cylindrical conduct radius R varies in magnitude according to the equation wherer is the distance from the central J J 1 5 R axis Thus the current density is a maximum J at that axis r 0 and decreases linearly to zero at the surface r R Calculate the current in terms of J and the conductor s cross sectional area A R

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