Section3-3tt - 3.3-1Slide Presentations for ECE 329,Slide...

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Unformatted text preview: 3.3-1Slide Presentations for ECE 329,Slide Presentations for ECE 329,Introduction to Electromagnetic FieldsIntroduction to Electromagnetic Fields3.3Curl and Divergence3.3-3Maxwell’s Equations in Differential FormCurlDivergence==tt∂∂∂∂B×ED×HJ∇-∇+AAAxyzxyzxyzaaa×Α∇=∂∂∂∂∂∂ρ=D∇ρ=B∇AAA=yxzxyz∂∂∂∂∂∂A∇++3.3-4Basic definition of curl×A∇is the maximum value of circulation of A per unit area in the limit that the area shrinks to the point. Directionof is the direction of the normalvector to the area in the limit that the area shrinksto the point, and in the right-hand sense. ×A∇maxLimSSCnd∆∆Al×A =a∇→∫3.3-5Curl Meteris a device to probe the field for studying the curl of thefield. It responds to the circulation of the field. 3.3-63.3-72for 0222for2zzxavxaxavxaaava<<=-<<[ ]negative for 02positive for 2yaxaxa× v<<∴ ∇=<<22xyzyzyyzvvavxyzxav∂∂...
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Section3-3tt - 3.3-1Slide Presentations for ECE 329,Slide...

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