# Plasma MHD

1. Jan 12, 2009

### Logarythmic

1. The problem statement, all variables and given/known data
Two of the MHD equations can be written as

$$\vec{E} + \vec{v} \times \vec{B} = \eta \vec{J}$$

$$\vec{\nabla} \times \vec{B} = \mu_0 \vec{J}$$

where [itex]\eta[/tex] is the resistivity of the plasma.

Derive an expression for the magnetic field at a very high resistivity and describe the corresponding consequences for the behaviour of the magnetic field lines.

3. The attempt at a solution
I need a starter. I have no clue.. Use the maxwell equations?