• Due Nov 17, 2016 at 8:59am
  • Points 2
  • Questions 2
  • Available until Nov 17, 2016 at 8:59am
  • Time Limit None
  • Allowed Attempts Unlimited


Watch the following video lecture segment:

[PDF of Slides]


• Most metals cannot be magnetized.
• Ferromagnetic metals, such as iron, can be magnetized by a magnetic field.
• Opposite poles (N & S) of magnets attract; like poles (N & N or S & S) repel.
• Magnetism may be removed by heating.
• Electric currents produce magnetic fields, as with an electromagnet.
• Earth’s core acts as an electromagnet.
• An electric motor uses electromagnets to create the force that turns the motor’s axel.

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Optional: Watch this Making of ... video from an episode of Breaking Bad:

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