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Magnetic Fields

Topic Review on "Title":

Magnetic Domain:

  • Microscopic areas of atoms where the magnetic fields are aligned.


  • A naturally magnetic class of materials where the magnetic domains are ordered and do not cancel out.

Magnetic Field:

  • Lines showing the shape and exent of a magnetic field around a permanent magnet or a moving charged object.  To signify a field coming directly out of the plane of a page, dots are used.  To signify a field going directly into the page, an X is used.

Right Hand Rule. RHR:

1.  The fingers extend or curl in the direction of the magnetic field.
2.  The outstretched thumb points in the direction of conventional current, or the direction of a positively charged moving particle.
3.  A line perpendicular to the palm indicates the direction of the magnetic force.

Mass Spectrometer:

  • A device that magnetically separates charged ions according to their mass.  A magnetic field is used to accomplish this separation.

Rapid Study Kit for "Title":
Flash Movie Flash Game Flash Card
Core Concept Tutorial Problem Solving Drill Review Cheat Sheet

"Title" Tutorial Summary :

Magnetism is a naturally occurring phenomena.  In most materials, the magnetic domains are randomly aligned.  However, in some cases, they are all aligned to produce a magnet.  This creates a magnetic field that extends around the object, moving from North to South.  A magnetic field can also be created from a moving charge, or current.  The right hand rule is used to visualize this field.  When a charge moves through an existing magnetic field, a magnetic force is exerted on it.  There are many examples in science and technology that utilize magnetism.

Tutorial Features:

Specific Tutorial Features:
• Diagrams showing various magnetic fields.
• Illustrations showing all aspects of the right hand rule.

Series Features:
• Concept map showing inter-connections of new concepts in this tutorial and those previously introduced.
• Definition slides introduce terms as they are needed.
• Visual representation of concepts
• Animated examples—worked out step by step
• A concise summary is given at the conclusion of the tutorial.

"Title" Topic List:

Magnetism in nature

  •           Magnetic domains
  •           Ferromagnetism
  •           Magnetic field diagrams

Magnetism, force and moving charge

  •           Right hand rule
  •           Magnetic field notation
  •           Magnetic force on a current carrying wire
  •           Magnetic force on a moving charged particle

Magnetism in technology

  •           Mass spectrometer
  •           Speakers, MRIs, and magnetic media

See all 24 lessons in College Physics, including concept tutorials, problem drills and cheat sheets:
Teach Yourself College Physics Visually in 24 Hours

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