Praktikum Medan Magnet Kelas 9 Semester Genap

Introduction

This tutorial explores the magnetic field shapes around various types of magnets, including bar magnets and U magnets. It guides you through a hands-on experiment to visualize these magnetic fields using simple materials. Understanding magnetic fields is crucial in physics, particularly in studying magnetism and its applications in real-world scenarios.

Step 1: Gather Your Materials

To conduct this experiment, you will need the following materials:

• 1 sheet of HVS paper
• Iron filings (serbuk besi)
• 2 bar magnets
• 2 U magnets

Practical Tips

• Ensure the iron filings are fine for better visualization of the magnetic field.
• Use clean, flat surfaces to avoid interference in the experiment.

Step 2: Investigate the Magnetic Field of a Bar Magnet

1. Place one bar magnet under the HVS paper.
2. Evenly sprinkle iron filings over the paper.
3. Gently tap the paper to allow the filings to align with the magnetic field lines.

Observations

• You should see distinct lines showing the magnetic field pattern, with the lines emerging from the north pole and entering the south pole.

Step 3: Explore the Magnetic Field of a U Magnet

1. Position one U magnet under another sheet of HVS paper.
2. Sprinkle iron filings on the paper.
3. Tap the paper lightly to help the filings align.

Observations

• The pattern will show how the magnetic field lines curve around the U shape, illustrating the strength and direction of the magnetic field.

Step 4: Examine Repelling and Attracting Forces

Repelling Forces

1. Bring two like poles (e.g., two north poles) of bar magnets close together under a sheet of paper.
2. Sprinkle iron filings as before and tap the paper.

Observations

• The filings should show a repelling pattern, indicating that like poles repel each other.

Attracting Forces

1. Now, bring two unlike poles (e.g., a north pole of one magnet and a south pole of another) close together.
2. Repeat the sprinkling and tapping process.

Observations

• The filings will align showing attraction, demonstrating that opposite poles attract.

Conclusion

In this tutorial, you learned how to visualize magnetic fields using common materials and observed the different behaviors of magnetic forces. This hands-on approach enhances understanding of magnetic properties and their implications. For further exploration, consider experimenting with different shapes or strengths of magnets to see how they affect the magnetic field patterns.