a small chunk of material the tan cube is placed above a
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A small chunk of material (the tan cube) is placed above a solenoid. - PowerPoint PPT Presentation

A small chunk of material (the tan cube) is placed above a solenoid. It magnetizes, weakly, as shown by small arrows inside. What kind of material must the cube be? A. Dielectric B. Conductor C. Diamagnetic D. Paramagnetic E.


  1. A small chunk of material (the “tan cube”) is placed above a solenoid. It magnetizes, weakly, as shown by small arrows inside. What kind of material must the cube be? A. Dielectric B. Conductor C. Diamagnetic D. Paramagnetic E. Ferromagnetic

  2. FINAL EXAM FINAL EXAM A few true/false questions conceptual questions Determine bound charge, , , for some material with E D P , and explain where the bound charge is. χ e Setup magnetic vector potential and field calculations. Compare the appraoches. Determine the for some using Ampere's Law. B J Determine bound currents, , and for some material B H with a "simple" free current, and explain properties of the bound currents

  3. A solid cylinder has uniform magnetization M throughout the volume in the direction as ϕ shown. In which direction does the bound surface current flow on the (curved) sides? A. There is no bound surface current. B. The current flows in the direction. ± ϕ C. The current flows in the direction. ± s D. The current flows in the direction. ± z E. The direction is more complicated.

  4. A very long aluminum (paramagnetic!) rod carries a uniformly distributed current along the direction. What I + z is the direction of the bound volume current? A. points parallel to J B I B. points anti-parallel to J B I C. It’s zero! D. Other/not sure

  5. A very long aluminum (paramagnetic!) rod carries a uniformly distributed current along the direction. We I + z know will be CCW as viewed from above. (Right?) What B about and inside the cylinder? H M A. Both are CCW B. Both are CW C. is CCW, but is CW H M D. is CW, is CCW H M E. ???

  6. A very long aluminum (paramagnetic!) rod carries a uniformly distributed current along the direction. What I + z is the direction of the bound volume current? A. points parallel to J B I B. points anti-parallel to J B I C. It’s zero! D. Other/not sure

  7. A very long aluminum (paramagnetic!) rod carries a uniformly distributed current along the direction. What I + z is the direction of the bound surface current? A. points parallel to K B I B. points anti-parallel to K B I C. Other/not sure

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