> Why Change Of Magnetic Flux Induces Current In It?

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SUMMARY

The discussion centers on the principle that a change in magnetic flux through a coil induces an electric current, as articulated in Maxwell's equations of electrodynamics. A constant magnetic flux does not induce current because it lacks temporal variation. The relationship between electric and magnetic fields is fundamental, and understanding this requires familiarity with classical electrodynamics and potentially special relativity. For deeper insights, the recommended resource is chapter 3 of Schwartz's "Principles of Electrodynamics."

PREREQUISITES
  • Maxwell's equations of electrodynamics
  • Basic principles of magnetism
  • Understanding of electric fields and magnetic fields
  • Familiarity with special relativity (SR)
NEXT STEPS
  • Study Maxwell's equations in detail
  • Explore the concept of electromagnetic induction
  • Learn about the relationship between electric and magnetic fields
  • Read chapter 3 of Schwartz's "Principles of Electrodynamics"
USEFUL FOR

This discussion is beneficial for students of physics, particularly those studying electromagnetism, as well as educators and anyone interested in the foundational principles of electrodynamics.

Ankit
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Why change of magnetic flux with the time through a coil induces current in it?
Please tell me that what happen to charge in the coil if the magnet or electromagnet wave around this? Also, why a constant magnetic flux does not induces current?
 
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This is a pretty involved question that doesn't have a simple answer. What do you know about it currently? What's your level of education in the subject?
 
Drakkith said:
This is a pretty involved question that doesn't have a simple answer. What do you know about it currently? What's your level of education in the subject?

I am the beginner in magnetism but intermediate in electricity.
 
As far as classical electrodynamics goes ( I don't know if more advanced theories of physics shed more light on this question ) this is one of maxwell's four fundamental postulates ( or equations ) of electrodynamics. So within the framework of the classical theory, this is simply how it works. It's a fundamental law and is just so. Electric and magnetic fields are just linked in this fundamental way. Incidentally, a time varying electric flux through a coil will also induce a circumferential magnetic field and this law displays a compelling symmetry with the other one.
It's kind of like asking why there exists a force of attraction between two opposite charges. You took that for granted didn't you ?
 
It's a consequence of special relativity (SR) so, contrary to siddharth5129's statements, classical physics can perfectly well explain its origin. However if you don't know SR then I'm not sure how effectively one could explain it to you. In any event I would recommend taking a look at chapter 3 of Schwartz "Principles of Electrodynamics".
 
oh. I'm sorry. My bad then.
 

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