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Lecture 12 Magnetism of Matter: Maxwell s Equations Chp. 32

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Lecture 12 Magnetism of Matter: Maxwell s Equations Chp. 32

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    1. Lecture 12 Magnetism of Matter: Maxwell’s Equations Chp. 32 Cartoon Warm-up problem Opening Demo Topics Finish up Mutual inductance Ferromagnetism Maxwell equations Displacement current Demos

    3. What is Mutual Inductance? M

    4.

    5.

    6.

    7. Ferromagnetism

    8. What is the atomic origin of magnetism?

    9. Spin Magnetic Dipole Moment of the Electron

    11.

    13. (C) Use the dipole formula to find the magnitude and direction of the magnetic field 1cm from the end of the bar magnet on its central axis at P.

    14. BigBite is a 50 ton electromagnet with a 25 cm by 100 cm gap

    17. Maxwells Equations: In 1873 he wrote down 4 equations which govern all classical electromagnetic phenomena.

    18. A magnetic field changing with time can produce an electric field: Faraday’s law

    19. New Question: Can a changing electric field with time produce an magnetic field?

    20. Maxwell’s law of induction

    21. Find the expression for the induced magnetic field B that circulates around the electric field lines of a charging circular parallel plate capacitor

    22. Ampere-Maxwell’s Law

    23. What is the displacement current?

    24. Show that the displacement current in the gap of the two capacitor plates is equal to the real current outside the gap

    25. Calculation of id

    26. Calculate Magnetic field due to displacement current

    27. Question 11: A circular capacitor of radius R is being charged through a wire of radius R0. Which of the points a, b, c, and d correspond to points 1, 2, and 3 on the graph

    28. Summary of Maxwell Equations Integral form

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