Using magnetic energy and causing degradation of the field

Click For Summary
SUMMARY

The discussion centers on the concept of utilizing magnetic energy without affecting the integrity of the magnetic field. Participants clarify that inducing voltage in a coil of wire by waving it in front of a permanent bar magnet does not deplete the magnet's energy. The misconception that magnetic fields store energy that can be consumed is addressed, emphasizing that the magnetic field remains unchanged during such interactions.

PREREQUISITES
  • Understanding of magnetic fields and their properties
  • Basic knowledge of electromagnetic induction
  • Familiarity with coils and voltage induction
  • Concept of energy conservation in physics
NEXT STEPS
  • Research the principles of electromagnetic induction in detail
  • Explore the concept of energy conservation in magnetic systems
  • Learn about the applications of coils in generating voltage
  • Investigate the differences between permanent magnets and electromagnets
USEFUL FOR

Physics students, electrical engineers, and anyone interested in the principles of magnetism and electromagnetic applications.

quantumfoam
Messages
133
Reaction score
4
Hi guys! I was wondering something about magnetic energy and well, I stumbled on to this. If there was a way to use a magnetic field's energy without influencing the actual magnet, would the degradation of the field increase at a faster rate?
 
Physics news on Phys.org
quantumfoam said:
Hi guys! I was wondering something about magnetic energy and well, I stumbled on to this. If there was a way to use a magnetic field's energy without influencing the actual magnet, would the degradation of the field increase at a faster rate?

Could you maybe give an example to illustrate what you are asking? The question is not very clear yet.

If you have a permanent bar magnet mounted to the edge of a desk, and you wave a coil of wire in front of the end of it, you will induce a voltage in the coil. That doesn't physically alter the bar magnet...
 
This seems to be another of those misunderstandings that people have ... that a magnetic field is stored energy that you can use up

Dave
 

Similar threads

Undergrad Is This Correct Description of Magnetic Saturation?
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Can nested solenoids trap particles?
  • · Replies 12 ·
Replies
12
Views
1K
High School Experiment issues (electromagnetism)
  • · Replies 42 ·
2
Replies
42
Views
4K
High School Why does a magnet attract metal objects?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Practical demo - Ferromagnetic attraction at interpole boundary
  • · Replies 19 ·
Replies
19
Views
1K
Graduate NMR flip angle - angle of nutation
  • · Replies 2 ·
Replies
2
Views
2K
High School Magnetic field and generator power output
  • · Replies 5 ·
Replies
5
Views
3K
High School Magnetic field produced by an electric current
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Magnetic field inside a capacitor
  • · Replies 16 ·
Replies
16
Views
3K
High School Basic Straight Line Permanent Magnet Accelerator
  • · Replies 3 ·
Replies
3
Views
2K