Passing current through a magnet

  • Context: Undergrad 
  • Thread starter Thread starter Ynsgfnsv
  • Start date Start date
  • Tags Tags
    Current Magnet
Click For Summary
SUMMARY

Passing direct current (DC) through a magnet, specifically one made of iron or steel, influences its residual magnetism. The movement of electrons creates a bound current, while the induced current generates a superimposed magnetic field. When alternating current (AC) is applied, it produces an oscillating magnetic field that interacts with the existing magnetic field. However, DC results in a non-oscillating magnetic field that can alter the material's residual magnetism.

PREREQUISITES
  • Understanding of electromagnetic theory
  • Knowledge of direct current (DC) and alternating current (AC) principles
  • Familiarity with magnetic fields and their properties
  • Basic concepts of electron movement in conductors
NEXT STEPS
  • Research the effects of DC on magnetic materials
  • Explore the principles of electromagnetic induction
  • Learn about the differences between AC and DC magnetic fields
  • Investigate applications of electromagnetism in engineering
USEFUL FOR

Students of physics, electrical engineers, and anyone interested in the interaction between electricity and magnetism.

Ynsgfnsv
Messages
6
Reaction score
0
I think magnet has to be a conductor of electricity if is made of iron or steel. So, What happens when we pass a direct current through a magnet? What if we pass through AC? Does the passage of current effect the strength of the magnet?
 
Physics news on Phys.org
The residual magnetism of a bar of iron,etc. is due to the current due to the electrons' movement around the atom, (the bound current), the induced current (free current) will produce a magnetic field that will be superimposed on the magnetic field due to the bound current and you will observe this superimposed magnetic field (AC or DC). Only thing is that a DC applied current and hence a non-oscillating magnetic field might change the residual magnetism of the material
 

Similar threads

Undergrad Charge movement relative to magnetic field frame dependence/invariance
  • · Replies 5 ·
Replies
5
Views
2K
High School Magnetic field produced by an electric current
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Motional EMF in Faraday disc, co-rotating magnet axial mean flux
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Hall effect -- is it always applicable?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad How induction works within a coil (nuances of it)
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Magnet through Pipe Experiment, continued
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Resulting magnetic field due to the passage of an AC current
  • · Replies 27 ·
Replies
27
Views
3K
Undergrad Is This Correct Description of Magnetic Saturation?
  • · Replies 14 ·
Replies
14
Views
2K
High School A question about induced current in LC circuits
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Why Doesn't Electric Force Cause Wires to Move?
  • · Replies 15 ·
Replies
15
Views
2K