(a) The current density in a cylindrical wire of radius R = 2.0 mm is uniform across a cross section of the wire and is J = 2.0 x 10$ A/m2.What is the current through the outer portion of the wire between radial distances R/2 and R ?
(a) The current density in a cylindrical wire of radius R = 2.0 mm is uniform across a cross section of the wire and is J = 2.0 x 10$ A/m2.What is the current through the outer portion of the wire between radial distances R/2 and R ?
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Transcribed Image Text:Problem 1
(a) The current density in a cylindrical wire of radius R =
2.0 mm is uniform across a cross section of the wire and is J =
2.0 x 105 A/m². What is the current through the outer portion
of the wire between radial distances R/2 and R ?
R
R/2
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