sci.physics.electromag

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< @ > wrote in message
news: @ ...
> Hi all,
>
> Choose two parallel wires. We know if these wires carry parallel
> currents
> they attract each other, and if they carry antiparallel currents they
> repel
> each other. Existence of this attraction or repulsion doesn't concern
> the
> medium of experiment, ie if the experiment is performed in air,
> nitrogen,
> natural gas, water, vacuum or other mediums yet this attraction or
> repulsion
> exists. Will the magnitude of this attraction or repulsion increase if
> this
> experiment is performed in a ferrofluid? It seems that this will be
> the case,
> because the magnetic field arising from the current in a wire at the
> place of
> the other wire polarizes ferromagnetic tiny particles of the
> ferrofluid near
> around this other wire and gives order to them in such a manner that
> the
> magnetic field at the place of this other wire will be strengthened
> (like
> when the existence of a ferromagnet core in a solenoid strengthens the
> magnetic field arising from the current in the solenoid), so, the
> force
> exerted on the current in this strengthened magnetic field will be
> more.
---------snip----------
To start consider your first proposition- look at the equation for the
force between the conductors and the role of permeability in this equation.
If you increase permeability by using a "bath" of ferrofluids then the
effect is obvious.

For your second proposition- the use of magnetic conductors will have a
miniscule effect. Note that it is the integral of H around a closed loop
that is related to the ampere turns enclosed. Even if the conductor had
infinite permeability, it is only a very small part of the magnetic path of
concern. Local distortion of the field may occur which might have a small
effect.

As for the rest??????? It appears that you are trying to re-invent the wheel
by putting corners on it.

--

Don Kelly dhky@
remove the X to answer


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