Cecil, W5DXP wrote:
"Charge is NOT limited to an infinitesimal charged particle, as you
imply."

True, but charge has a force characteristic. The electron has a charge
of -1, or, the value of negative charge carried by an electron is one. A
coulomb is (6.281 times 10 to the 18th power) times the charge carried
by one electron. A coulomb per second past a particular point is also
one ampere.

I have long thought that electrical charges, individually, likely have
random motions but that an ampere is the net result of more charges
moving one way than another.

With so many small charges involved in a net substantial charge flow,
why shouldn`t charges be moving in two or more directions at once?

Best regards, Richard Harrison, KB5WZI

Richard Harrison wrote:

Cecil, W5DXP wrote:
"Charge is NOT limited to an infinitesimal charged particle, as you
imply."

True, but charge has a force characteristic. The electron has a charge
of -1, or, the value of negative charge carried by an electron is one. A
coulomb is (6.281 times 10 to the 18th power) times the charge carried
by one electron. A coulomb per second past a particular point is also
one ampere.

I have long thought that electrical charges, individually, likely have
random motions but that an ampere is the net result of more charges
moving one way than another.

With so many small charges involved in a net substantial charge flow,
why shouldn`t charges be moving in two or more directions at once?

The simplest answer is that charges move in response to the local
electric field they experience. That field has only one value at that
point, at that instant, and is determined by the superposition of all
local electric fields.

73, AC6XG

On Tue, 31 Aug 2004 08:50:39 -0700, Jim Kelley
wrote:

With so many small charges involved in a net substantial charge flow,
why shouldn`t charges be moving in two or more directions at once?

The simplest answer is that charges move in response to the local
electric field they experience. That field has only one value at that
point, at that instant, and is determined by the superposition of all
local electric fields.

If you presume the simplest answer, it still entails complexity in
that this is more correctly called "directed drift" wherein the motion
of the chargeS are random within a locality, but in the aggregate and
as an average tend in one direction.

This sort of dovetails with recent postings by Art speculating about
charge accelerating (without needing power mind you) in the circle of
a loop antenna. The truth of the matter is that those electrons/holes
would never move in a circle, nor even an arc given the short distance
of the net migration being very much less than the diameter of a
small, small wire (and at any HF frequency, infinitesimal).

73's
Richard Clark, KB7QHC

Jim Kelley wrote:
The simplest answer is that charges move in response to the local
electric field they experience. That field has only one value at that
point, at that instant, and is determined by the superposition of all
local electric fields.

Hi Jim, we missed you.

For RF, it is certainly possible for the network charges, at t(x), to
be moving in the opposite direction from force exerted by the network
electric field (voltage) at t(x). Remember, dQ/dt can have a different
sign from the sign of the electric field voltage. This ain't DC.
--
73, Cecil http://www.qsl.net/w5dxp



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