Behaviour of a piece of metal inside a coil

  • Thread starter Thread starter episage
  • Start date Start date
  • Tags Tags
    Coil Metal
Click For Summary
SUMMARY

The discussion centers on the behavior of a ferromagnetic piece of metal placed beneath a coil generating a uniform magnetic field. When the coil is energized, the metal is attracted towards the coil, with the force being strongest at the ends of the coil and diminishing towards the center. The equilibrium position of the metal will be below the center of the coil due to the counteracting force of gravity. This results in a balance between the magnetic attraction and gravitational pull, determining the final resting position of the metal.

PREREQUISITES
  • Understanding of electromagnetic theory, specifically solenoids.
  • Familiarity with the properties of ferromagnetic materials.
  • Knowledge of gravitational forces and their interaction with magnetic forces.
  • Basic principles of magnetic fields and their uniformity.
NEXT STEPS
  • Research the principles of solenoid design and its magnetic field characteristics.
  • Study the behavior of ferromagnetic materials in varying magnetic fields.
  • Explore the mathematical modeling of forces acting on ferromagnetic objects.
  • Investigate applications of magnetic levitation and its underlying physics.
USEFUL FOR

Physicists, electrical engineers, and students studying electromagnetism or materials science will benefit from this discussion.

episage
Messages
2
Reaction score
0
Hello,

I was thinking about this and I'm still not sure.

I have a long coil (which has uniform magnetic field inside) and a piece of ferromagnetic.
Coil is connected to some power source and is positioned perpendicular to surface of the Earth.
If I put that piece of ferromagnetic metal underneath the coil, what will happen? (I assume that radius of coil is much bigger than radius of the metal)
Of course the metal will be sucked.
Here is my question: "how high" the piece of metal will be sucked? to the middle point of the coil? a bit below middle point?
 
Last edited:
Engineering news on Phys.org
The force attracting the metal to the centre of the solenoid will be greatest at the ends, falling to zero in the middle. Gravity will be pulling the weight of the metal downwards. The metal will rest where the forces are in balance, that will be somewhere below the centre of the solenoid.
 

Similar threads

Do concentric coils steal power from one another?
  • · Replies 3 ·
Replies
3
Views
2K
Function of this piece in a loudspeaker?
  • · Replies 13 ·
Replies
13
Views
2K
Basics of RF coil development for MRI
  • · Replies 11 ·
Replies
11
Views
4K
Questions about induction heating
  • · Replies 5 ·
Replies
5
Views
4K
Inductive Power Transfer across a metal
  • · Replies 8 ·
Replies
8
Views
3K
Power generated by a coil rotating in magnetic field
  • · Replies 3 ·
Replies
3
Views
5K
Electromagnetics: Non-Symetrical coil with external iron
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Can a One Direction Transformer Prevent Reverse Induction in Primary Coil?
  • · Replies 21 ·
Replies
21
Views
2K
Wood/Glass/Metal Magnet Inside a Shell containing Ferromagnetic Metal
  • · Replies 2 ·
Replies
2
Views
3K
Is a Grounded ATV Generator Coil a Half-Wave System?
  • · Replies 8 ·
Replies
8
Views
3K