Field lines of the circular coil in Electromagnetism- Class 10 Science Experiment

Chapter Name: Electromagnetism

Activity Name: Field lines of the circular coil in Electromagnetism

Activity Description:

Field lines of the circular coil in Electromagnetism- Class 10 Science Experiment

In this experiment, we will investigate the magnetic field lines produced by a circular coil carrying electric current. By passing insulated copper wire through two holes on a wooden plank and creating a coil, we will connect it to a battery through a switch.

Placing a compass needle at the center of the coil and marking points on either side of the compass, we will trace these points to the edges of the plank to obtain the field lines of the circular coil.

Required Items:

  1. Thin wooden plank covered with white paper
  2. Insulated copper wire (24 gauge)
  3. Battery
  4. Switch
  5. Compass needle

Step by Step Procedure:

  1. Take the wooden plank covered with white paper.
  2. Create two holes on the surface of the plank as shown in figure 5(a).
  3. Pass the insulated copper wire (24 gauge) through the holes and wind it 4 to 5 times to form a coil, resembling figure 5(a).
  4. Connect the ends of the wire to the terminals of the battery using a switch.
  5. Switch on the circuit to allow current to flow through the coil.
  6. Place the compass needle at the center of the coil on the plank.
  7. Mark dots on either side of the compass.
  8. Move the compass to one of the marked dots, and place another dot further away.
  9. Repeat this process, moving the compass along the dots, until reaching the edge of the plank. Do the same for the other side of the coil from the center.
  10. Connect the dots on both sides with lines to obtain the field lines of the circular coil.
  11. Repeat the process for other points taken between the holes, drawing corresponding lines.

Experiment Observations:

The experiment will result in obtaining the magnetic field lines of the circular coil formed by the current-carrying copper wire.

Precautions:

  1. Handle the battery, switch, and circuit connections carefully to avoid any short circuits or electric shocks.
  2. Keep the current flow through the coil low to prevent excessive heating of the wire and battery drain.
  3. Ensure the compass needle is free from any magnetic interference while taking readings.

Lesson Learnt from Experiment:

This experiment demonstrates the pattern of magnetic field lines produced by a circular coil carrying electric current. The field lines form concentric circles around the coil, providing insights into the magnetic properties and the direction of the magnetic field in such a setup.

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