magnetic

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Victorian Bulb

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  • The Victorian light bulb (a replica of Thomas Edison’s original design) contains a long, visible, carbon filament.
  • When a neodymium magnet is brought into close proximity of the bulb, the field of the magnet causes the filaments to vibrate at 60 Hz (the frequency of AC current in the filaments).

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  • Bulb located in L01, section B3 (in a small, labeled box).
  • Lamp cord in L35, section D2.
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Magnetic Torque

 

Magnetic Torque demo picture

  • Demonstrate torque experienced by magnetic dipole in B-field.
  • Measure magnetic moment of dipole.
  • Show that net force experienced by magnetic dipole
    is zero in uniform B-field, and non-zero in B-field with gradient.
  • See instructors manual for experimental details.
  • Located in L01, section B2.

 

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Current Balance

 

Current Balance demo picture

  • Purpose: Demonstrate how the magnetic force on a current
    carrying wire depends on the angle between the current and the external     B-field.

Location

  • Current Balance in L01, sectionB3
  • Power supply in L35, section F1
  • Multimeter in L35, section F3.