So I'm trying to gain an intuitive grasp of plasmas and magnetohydrodynamics.
There's a couple of questions I have.
What does it means magnetic field lines are frozen into "plasmas"? Is it that the field lines will follow the bulk motion of the fluid? I know this follows from the idea that ideal plasmas have no resistivity. What is the qualitative physical explanation for the connection between frozen field lines and no resistivity?
-What are the microscopic arguments to the geometry of magnetic field lines? Naively, I would think if a plasma is in thermodynamic equilibrium and the particles have a tiny mean free path, there wouldn't be a discernible charge current because the charges would move around in random motion. Yet, the Magnetic field lines induced by these charges are not random at all.
-What is the geometry of field lines in a plasma in thermodynamic equilibrium with no bulk motion? For example, let's say we have a 3D cube of plasma, how would the field lines look like?
