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MAGNETIC FIELDS

CONTENT

  1. The Concept of Magnetic Field
  2. Properties of Magnetic Lines of Force
  3. Magnetic Field Patterns
  4. Magnetic Field in a Straight Current-Carrying Conductor
  5. Magnetic Field Due to Current in a Solenoid
  6. Magnets and Magnetisation
  7. Properties of Bar Magnets
  8. Methods of Making Magnets
  9. Demagnetisation
  10. Applications of Electromagnets
  11. Temporary and Permanent Magnets
  12. The Earth’s Magnetic Field
  13. The Angle of Dip
  14. Force on a Moving Charge in a Magnetic Field

 

The Concept of Magnetic Field

Magnetic field is a region around a magnet where magnetic influence is experienced or felt. It is  also a region where it exerts force on other magnets. It is a vector quantity.

 

Properties of Magnetic Lines of Force

(i) They originate from the N-pole and end in the S-pole. ii. Two magnetic lines of force do not cross each other.

(ii) Where the lines of force are close together, the intensity of the field is greater; where they are widely separated, the intensity is less and where they are parallel, the intensity is  uniform.

Lesson tags: Physics Lesson Notes, Physics Objective Questions, SS3 Physics, SS3 Physics Evaluation Questions, SS3 Physics Evaluation Questions First Term, SS3 Physics First Term, SS3 Physics Objective Questions, SS3 Physics Objective Questions First Term
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