Theory & Procedure, Field Lines formed around a Bar Magnet Class 10 Notes | EduRev

Science Class 10

Class 10 : Theory & Procedure, Field Lines formed around a Bar Magnet Class 10 Notes | EduRev

The document Theory & Procedure, Field Lines formed around a Bar Magnet Class 10 Notes | EduRev is a part of the Class 10 Course Science Class 10.
All you need of Class 10 at this link: Class 10

Objective

To study field lines formed around the bar magnet.

Theory

  • Magnets have two types of poles: north poles and south poles.
  • The magnetic strength at the pole is the strongest.
  • When a bar magnet is suspended freely in a horizontal position, the bar magnet will align itself in north-south direction, where the north pole of the magnet points to the north pole of the Earth.
  • Like poles repel and unlike poles attract.
  • Magnetic materials such as iron, nickel, steel etc. are attarcted by the magnets.
  • Attractive and repulsive force of magnet depends how strong the magnet is.
  • Magnetic force also depends on distance between the magnet and the object.

Behaviour of Bar Magnets in possible pole configurations.

Theory & Procedure, Field Lines formed around a Bar Magnet Class 10 Notes | EduRev


As performed in the lab

Materials :

White paper sheet, drawing board, adhesive, bar magnet, iron filings and magnetic compass.

Procedure :

  1. Fix a sheet of white paper on a drawing board using some adhesive material.
  2. Place a bar magnet in the centre of it.
  3. Sprinkle some iron filings uniformly around the bar magnet.
  4. Now tap the board gently.
  5. Observe the pattern in which the iron filings arrange themselves.
  6. Use a magnetic compass to determine the direction of the field lines.

As performed in the simulator

  1. Drag the bar magnet or magnetic compass around and observe the deflection in needle of compass and magnetic field (B) acting on the magnetic compass.
  2. To view the magnetic field lines, click on Show Field Lines checkbox.
  3. For more detailed insights of the activity click on Observation tab.

Observation

  1. Direction in which compass needle points is the direction of the magnetic field.
  2. The strength of the magnetic field is inversely proportional to the distance between the field lines.
  3. Magnetic field lines never cross each other. It is unique at every point in space.
  4. Magnetic field lines begin at the north pole of a magnet and terminate on the south pole.
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