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Unformatted text preview: L toroid l ≈ µ N 2 A l 2 = µ n 2 A , which indeed reduces to that of a long solenoid. Note that the approximation ln(1 + x ) ≈ x is used for very small | x | ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
- Fall '08