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Bar magnet #2

Learning objectives

  • To visualize the action at a distance created by a magnet.
  • To show how the lines of force reveal the geometry of a magnetic field. The compass needle remains parallel to the field lines.
  • To show that the lines of force are intrinsic to a magnet.

The deviation experienced by a compass needle reveals the action at a distance of the magnetic field.

Magnetic field lines are a useful mean of visually representing the vector nature of the magnetic field. This pattern of lines reveals the symmetry of the magnetic field which would be otherwise hard to depict.

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