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Electromagnetism II
Instructor: Andrei [email protected]
Spring 2013Thursdays 1 pm – 4 pm
Spring 2013, NJIT 1
Spring 2013:
1. Book: D. J. Griffiths Introduction to Electrodynamics2. Syllabus: @ web.njit.edu/~sirenko3. Course components: 5 HWs, 2 CQZs, Final Exam20% 15%+15% 50% = 100%50% D 60% C 65% C+ 70% B 75% B+ 80% A
Spring 2013, NJIT 2
Lecture 1
Prerequisites: E&M I from Fall 2012Chapters: 1, 2, 3, and 4
Vector algebraElectrostaticsLaplace Eq. , Images, Expansions,…Diff. Eqs.and Electric Fields in Matter
Ability to solve problems and use your knowledge
Spring 2013, NJIT 3
Vector Algebra “del”
Spring 2013, NJIT 4
“curl”
Also need Boundary conditions!
Vector Algebra
Spring 2013, NJIT 5
Electrostatics
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Electrostatics
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Electrostatics
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Problems: Electrostatics
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Syllabus for Spring 2013: Chapters 5, 6, 7, 8, 9, 10, 11 + Optics of Magnetoelectric materials
Spring 2013, NJIT 10
Magnetostatics
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Two main questions:
• What is the m.f. produced by a current ?
• What is the force on a current due to the m.f. ?
Magnetic Forces 1. moving charge (e.g., electron)
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Cyclotron motion
Cycloid Motion
Spring 2013, NJIT 13
Magnetic Forces do not work
Spring 2013, NJIT 14
Current
Current Density
Spring 2013, NJIT 15
i.e., Local charge conservation
Spring 2013, NJIT 16
Stokes theorem:
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Spring 2013, NJIT 23
Stokes theorem:
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3 of them for x,y,z
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Spring 2013, NJIT 26
Boundary conditions