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formula_sheet3 - Physics 2760 Exam 3 SP 2008...

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Physics 2760 Exam 3 SP 2008 Magnetic Force on: moving charges F qv B = × JG G JG 0 2 Magnetic Field of a: Charge qv r B μ × = G ± JG 0 2 4 The Bio Savart Law A ' L Ids r d B r μ π × = G ± JG currents between currents d F Idl B I I μ = × JG G JG 2 0 2 2 3/2 4 2 4 ( ) Circular Loop r R I B x R π μ π π = + 0 Ampere's Law Faraday's Law C B dl I d μ φ = JG G v 0 1 2 2 Magnetic Torque F l d B π τ μ = = × G JG JG 0 2 at center, x=0 t i fi it I B R μ = ( ) Motional EMF m dt v B dl = − = × ε ε G JG G v Dipole Moment Potential Energy I A μ = JG JG JG JG 2 0 3 2 at infinity
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