31. Consider a wire of a circular cross-section with a radius of R= 3.00 mm. The magnitude of the current density is modeled as J = cr? = 5.00 × 106 A,2. what _ is the current through the inner section of the wire from the center to r = 0.5R ?

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31. Consider a wire of a circular cross-section with a
radius of R= 3.00 mm. The magnitude of the current
density is modeled as J = cr? = 5.00× 10°_A,r2. What
m'
is the current through the inner section of the wire from the
center to r = 0.5R ?
Transcribed Image Text:31. Consider a wire of a circular cross-section with a radius of R= 3.00 mm. The magnitude of the current density is modeled as J = cr? = 5.00× 10°_A,r2. What m' is the current through the inner section of the wire from the center to r = 0.5R ?
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