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SS3 Physics

Magnetic fields

Overview

Plotting the magnetic field around; - a bar magnet - a straight conductor carrying current - a solenoid. Making a magnet form a soft iron bar Making an electro-magnet Describing the working principles of an electric bell and a telephone earpiece Locating the earth's magnetic north-south direction. Explaining the magnetic force on a moving charge. Stating the relation between the magnetic force and the motion of a charge in a magnetic field.

What you'll learn
  • Concept of magnetic field.
  • Magnetic field around: - a bar magnetic - a straight conductor carrying current - a solenoid.
  • Magnets:
  • - Temporary and permanent,
  • - Making magnets.
  • Application of electro-magnetic field.
  • Earth's magnetic field:
  • - Description and use
  • - Mariner's compass
  • Magnetic force on a moving charge.