Chapter 29 â Electromagnetic Induction - UCF Physics

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6. Eddy Currents - Induced currents that circulate throughout the volume of a material. Ex.: B confined to a small region of rotating disk Ob moves across B and emf is induced induced circulation of eddy currents. Sectors Oa and Oc are not in B, but provide return conducting paths for charges displaced along Ob to return from b to O. Induced I experiences F B that opposes disk rotation: F = IL × B (right) current and L downward. (the return currents lie outside B do not experience F B ). -The interaction between eddy currents and B causes braking of disk.
(a)Metal detector (airport security checkpoint) generates an alternating B 0 that induces eddy currents in conducting object (suitcase). These currents produce alternating B’ that induces current in detector’s receiver (I’). (b) Same principle as (a).
Page 1 and 2: Chapter 29 - Electromagnetic Induct
Page 3 and 4: - Magnetically induced emfs are alw
Page 5 and 6: Coil: ε = − N dΦ dt B N = numbe
Page 7 and 8: 3. Lenz’s Law - Alternative metho
Page 9 and 10: Lenz’s Law and the Response to Fl
Page 11 and 12: Induced Current / Eddy current levi
Page 13 and 14: -The electric field in stationary U
Page 15: -The total work done on q by the in
Page 19 and 20: Displacement current (i D ): fictit
Page 21 and 22: Maxwell’s Equations of Electromag
Page 23 and 24: 8. Superconductivity - Sudden disap
Page 25: http://www.youtube.com/watch?v=G3eI

Chapter 29 â Electromagnetic Induction - UCF Physics

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Chapter 29 â Electromagnetic Induction - UCF Physics