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Avditorne vaje - LES

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16.4.2012Sila v magnetnem poljuKer je permeabilnost jedra inkotve neskončna, je magnetnopoljska jakost enaka 0. Zatovelja:H + H δ = I Nδ δ δ2 H δ δ=I NI NHδ=2δI NB = µ02 δ13Sila v magnetnem poljuOb upoštevanju geometrijskih razmer znaša sila na enoto površine:f m22⎛ I N ⎞ 2 ( I N )⎜µ2 0 ⎟ µ0 2B ⎝ 2δ⎠ 4δµ0( I N )= = = =22µ2µ2µ8δ0002Celotna sila:2µ0( I N )f S = S8δF = m2m14Površina S:S =S =Sila v magnetnem polju(2 ⋅15+ 30) ⋅ 20 ⋅101,2 ⋅10−32m−6−7224 π10( 3⋅1000)−34 π ( 3)2Fm =1,2 ⋅10= 1,2 ⋅10= 424, 1 N−3228 2 ⋅108( 2)( )155

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