Re: Basic Question

Benj <bjacoby@[EMAIL PROTECTED]
> wrote:

> But do not be misled by the clowns here and elsewhere who pretend that
> ALL substances follow Ohm's law. They don't. Even copper, which is
> more or less a standard material for electrical wires, is rather
> unstable with regard to Ohm's law. When resistors are made from coils
> of wire, copper is NOT the wire used for this reason. Other conductors
> (like say plasmas) are FAR from following Ohm's Law.

EVERYTHING follows Ohm's law at the macro, or bulk if you like that
term better, level.

The reason copper wire is not used to make wire wound resistors is the
resistivity of copper is so low it would take huge amounts of wire
to make a resistor which could be made with a far fewer number of
turns of a wire with more resistivity.

-- 
Jim Pennino

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