Magnetic field lines in Electromagnetism- Class 10 Science Experiment

Chapter Name: Electromagnetism

Activity Name: Magnetic field lines in Electromagnetism

Activity Description:

Magnetic field lines in Electromagnetism- Class 10 Science Experiment

This experiment demonstrates the concept of magnetic field lines using a bar magnet and a compass. By placing the bar magnet on a sheet of paper with a compass and tracing the compass needle’s orientation at different points around the magnet, the magnetic field lines are visualized.

Required Items:

  1. White sheet of paper
  2. Bar magnet
  3. Compass

Step by Step Procedure:

  1. Place the white sheet of paper on a horizontal table.
  2. Put two dots on either side of the compass needle on the paper.
  3. Draw a straight line connecting the two dots, representing the North and South of the Earth.
  4. Place the bar magnet on the drawn line in a way that its north pole points towards geographic north.
  5. Position the compass at the north pole of the bar magnet and put a dot to mark its position.
  6. Remove the compass and place it at the dot’s location; observe the change in the compass needle’s direction.
  7. Repeat step 6, placing a dot at the north pole of the compass needle each time you move it to a new location.
  8. Continue this process till you reach the south pole of the bar magnet.
  9. Connect the dots from the north pole (‘N’) of the bar magnet to the south pole (‘S’) of the bar magnet, forming a curved line.
  10. Select another point near the north pole of the bar magnet and repeat the process to obtain different curved lines, as shown in figure 2.

Experiment Observations:

The experiment will reveal a series of curved lines that represent the magnetic field lines around the bar magnet.

Precautions:

  1. Handle the bar magnet and compass with care to avoid any damages.
  2. Ensure the compass is not placed too close to other magnetic or metallic objects during the experiment, as it may affect the accuracy of the observations.

Lesson Learnt from Experiment:

This experiment helps in understanding the concept of magnetic field lines and how they form around a bar magnet. The curved lines observed represent the magnetic field’s direction and strength, flowing from the north pole to the south pole of the magnet.

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