ch26-p005 - 5. The cross-sectional area of wire is given by...

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5. The cross-sectional area of wire is given by A = π r 2 , where r is its radius (half its thickness). The magnitude of the current density vector is JiAi r == // π 2 , so
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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