The 'why' of electromagnetic induction

Click For Summary
Electromagnetic waves are generated by moving charges, and a changing magnetic flux can induce current in a conductor, which is a reversible process. An electric field can indeed create a magnetic field when the electric flux changes, highlighting the symmetry between these two fields as described by Maxwell's equations. This relationship illustrates that a flux of electric field leads to a rotational magnetic field, and vice versa. The discussion encourages imaginative thinking about concepts like "magnetic charges." Understanding these principles is essential for grasping the fundamentals of electromagnetic induction.
JanClaesen
Messages
56
Reaction score
0
Are electromagnetic waves always caused by a moving charge? A magnetic field can induce current in a conductor if the magnetic flux going through this conductor changes, is this reversible? So does an electric field cause a magnetic field because the electric flux ('through' what?) changes? Is there an intuitive understanding of this phenomena?
 
Physics news on Phys.org
Yes, the way to understand this is Maxwell equations, there you can see the symmetry between electric and magnetic fields :)

There you can see that: a flux of electric field causes a rotational magnetic field, and a flux of magnetic field causes a rotational electric field.

And there also you can do some assumptions about "magnetic charges" if you wish :D, heheheh. Some fancy imagination ;)

If you have some specific question, just ask :)
 
I'm working through something and want to make sure I understand the physics. In a system with three wave components at 120° phase separation, the total energy calculation depends on how we treat them: If coherent (add amplitudes first, then square): E = (A₁ + A₂ + A₃)² = 0 If independent (square each, then add): E = A₁² + A₂² + A₃² = 3/2 = constant In three-phase electrical systems, we treat the phases as independent — total power is sum of individual powers. In light interference...

Similar threads

  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 16 ·
Replies
16
Views
4K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 14 ·
Replies
14
Views
3K
Replies
11
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 21 ·
Replies
21
Views
2K
Replies
23
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K