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Physics, 31.03.2020 03:50 rileywjones0725
The magnitude J of the current density in a certain wire with a circular cross section of radius R = 3.50 mm is given by J = (5.00 ✕ 108)r2, with J in amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.880R and r = R?
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