The magnitude J of the current density in a certain wire with a circular cross section of
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The magnitude J of the current density in a certain wire with a circular cross section of radius R = 2.00 mm is given by J = (3.00 x 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 = 0.900R and r = R?
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Assuming J is directed along the wire with ...View the full answer
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Related Book For 
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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