tsl244 - with magnitude B depending on R only. Current...

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Ampère’s Law: Magnetic Field Outside a Wire Consider a long, straight wire of radius R with current I . Apply Ampère’s law, I ~ B · d ~ = μ 0 I C , to the circular loop of radius r > R . The symmetry dictates that the magnetic field ~ B is directed tangentially
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Unformatted text preview: with magnitude B depending on R only. Current inside loop: I C = I . Ampres law applied: B (2 r ) = I. Magnetic field at radius r > R : B = I 2 r . tsl244 p.1/1...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

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