Electric fields and magnetic fields do not "converge" in the sense of merging into a single field or point when brought together. However, they are deeply interrelated and can interact with each other under certain conditions. Here's a clearer breakdown:

1. Static Fields (No Convergence)

• A static electric field (from a stationary charge) and a static magnetic field (from a steady current or permanent magnet) simply coexist in space.
• They do not affect each other directly or "converge." Instead, they independently influence charged particles in their vicinity.

2. Dynamic Fields (Interaction via Electromagnetism)

When electric and magnetic fields vary with time, as in electromagnetic waves, they are intrinsically linked:

• A changing electric field creates a magnetic field (Faraday’s Law).
• A changing magnetic field creates an electric field (Maxwell–Ampère’s Law).

This coupling is what gives rise to electromagnetic waves (e.g., light, radio waves), where the electric and magnetic fields are perpendicular to each other and propagate together through space.

In vacuum, as Farid Leguebedj.

I agree with Dr. Farid Leguebedj. However, under item 2, I would replace the word "creates" with "accompanies". What creates both fields is an electrostatically charged object that is moved in space some nonzero distance. dH/dt=dE/dx. So, H(x,t)=Integral [(dE/dx) dt].

Also, according to Maxwell equations, the E/H fields are always perpendicular. For example, in 1D, you have Ez/Hy components for TEM1 and Ez/Hx components for the TEM2 mode. There are no other TEM modes.

I hope we answered your question fully Ms. Rumani Dey, but if I didn't, I think you should add more details.

Yes thank you all for answering my question. Well my actual curiosity is, I am trying to know whether I can compare a knot to the intersection of magnetic and electric field. Or if I can derive any equation of a knot ?

Your statement tends to suggest that you are thinking of electric and magnetic fields as two independent entities which can exist independently of each other. You should think as electric and magnetic fields like the two sides of a coin - 'heads' and 'tails'. All coins have two sides (by definition) and electric and magnetic fields are just the two sides of the electromagnetic 'coin' - just in the way that you can't have a one sided coin, you can't separate electric and magnetic fields as they are just different aspects of the same thing.

As far as knot goes. In 1D example above, Ez (x,t) and Hy (x,t) are two waves in the same point in space/time. They do not intersect. It is all on one line, which is in the x direction. For an intersection, you probably would need 2 lines. Maybe if you had 2 perpendicular EM waves, generated by 2 separate electrically charged objects. You probably have to think of 2D EM waves. The knot, is it a 2D or 3D object? A figure would help to understand what you are trying to do, although I am not sure I can add much more to this discussion. If you want to describe a curve in space, there are mathematical ways to do it, and you do not need to get into EM fields for that.

Rumani Dey - my advice to anyone trying to fully understand electromagnetic theory would be to start from Geometric Algebra (Clifford Algebra) and understand the properties of 4-D multivectors. Once you understand the inherent nature of 4-D space then apply the concept of Minkowski space to the Geometric Algebra for 4-D space. In other words consider having 3 spatial dimensions and a 4th time dimension with a scaling factor of C (the speed of light) that allows the spatial and time dimension to be normalized. If you can wrap your head around the interactions that exist as a function of this mathematical framework then you understand electromagnetics - it is simply nothing more than an emergent behavior that comes forth from the mathematics of 4-D spacetime.

Thank you so much @Dmitry Gorodetsky. Your explanation cleared my confusion to some extent.

Also thank you @Michael Harrison for the knowledge of the resources which are useful to clear my doubts.

I couldnt agree more with Dr. Farid.

Dear, the answer is attached in word file, i hope it will help you.

Hi Hassan ,

Thank you so much for taking the pain to answer my question.