----------------------------
<EskWIRED@[EMAIL PROTECTED]
> wrote in message
news:g9pfo7$igg$1@[EMAIL PROTECTED]
> In sci.physics.electromag, Salmon Egg <SalmonEgg@[EMAIL PROTECTED]
> wrote:
>> In article <g9p33t$qta$1@[EMAIL PROTECTED]
>,
>> EskWIRED@[EMAIL PROTECTED]
wrote:
>
>> > I'm wondering how one can squeeze more current through a given
diameter
>> > wire by means of increasing the voltage.
>
>> <snip>
>
>> It would be very useful if you gave more information about yourself.
How
>> old are you?
>
> 50
>
>> What education have you had?
>
> Double AB, in Sociology and Philosophy, and a JD. Very little math,
which
> is why I asked about the physical processes, rather than the equations.
>
>
>>How long have you been trying
>> to understand electricity?
>
> For a long time, on and off, when other interests are momentarily at
bay.
>
> What have you done or read to do so? These
>> are the questions I would have asked when in high school.
>
> I've read a fair amount, but the reason why higher voltage allows
thinner
> wire is something I've wondered about only for a few years, since I have
a
> client in the hydroelectric business. For example, I never heard the
term
> "Power Factor" before I started with them.
>
> --
> The whole problem with the world is that fools and fanatics are always
so
> certain of themselves, but wiser people so full of doubts.
> -- Bertrand Russel
Higher voltage means lower current for a given power level. It is energy
transfer that is the main purpose of an electrical or electro-thermal,
mechanical, chemical system and power is the rate of change of transfer of
energy. Balancing economics and technical factors means that there is an
optimal choice for a given situation. This results, in a practical sense,
specific voltage levels for certain general ranges of power transfer.
For DC the power is the product of current and voltage. For AC it is more
complex (pun not intended) and then the effects of capacitance and
inductance come into play (Calculus involved) leading to the concept of
"power factor".
In response to your previous questions- The applied voltage makes some
electrons break free from their home atoms and migrate to new homes,
forcing
other electrons to migrate and so on down the line. A higher voltage
provides the energy to kick more electrons out of their homes (or offer
them
higher pay in the next county) so more migrate and there is an increase in
current .
This explanation is very crude and simplistic and may not be fully
endorsed
by this group- I apologize.
--
Don Kelly dhky@[EMAIL PROTECTED]
the X to answer
>
|
