Magnetic Field Intensity
What is the relationship between the magnetic field strength and the distance from a magnetic "point source"?
Try this
The strength of a magnetic field is dependent upon the distance between the sensor and the “point-source” of the magnet. Using the Magnetometer tool, record the magneti field at various distances away from a strong but small permanent magnet.
Challenge yourself
- Create a graph of Magnetic Field Strength vs. Distance from the magnet, and derive a mathematical expression for this relationship.
- If there are any constants in this mathematical expression, explain their significance.
- Try performing the same experiment above, but use a fairly large, strong bar magnet. How does the graph of the magnetic field strength compare to before? Why might the nature of the relationship be different?