What is the current in a wire of radius R = 3.40 mm if the magnitude of the current density is given by (a) J_a = J_0r/R and (b) J_b = J_0(1-r/R), in which r is the radial distance and J_0 = 5.50 X 10^4 A/m^2? (c) Which function maximizes the current density near the wire's surface?
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What is the current in a wire of radius R = 3.40 mm if the magnitude of the current density is given
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