| Topic: |
Science > Physics |
| User: |
"xray4abc" |
| Date: |
15 Nov 2006 02:01:28 PM |
| Object: |
Simple electricity, and yet.....! |
Consider an ideal metallic conductor, connected,
in a closed electrical circuit, to a non-ideal DC
power source.
E=0 inside the conductor; E and B are perpendicular
to the conductor outside the conductor and at its surface too.
What is, then, causing the electrical current through
the conductor? What is pushing the electrons along
the conductor?
All the best, LL
.
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| User: "Edward Green" |
|
| Title: Re: Simple electricity, and yet.....! |
17 Nov 2006 07:34:58 PM |
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xray4abc wrote:
Consider an ideal metallic conductor, connected,
in a closed electrical circuit, to a non-ideal DC
power source.
E=0 inside the conductor; E and B are perpendicular
to the conductor outside the conductor and at its surface too.
What is, then, causing the electrical current through
the conductor? What is pushing the electrons along
the conductor?
If the conductor is "ideal", then you've postulated a superconductor.
"Metallic" is irrelevent. "Electrons" is irrelevant. "Push" is
irrelevant. Perhaps you can invoke some work done by the power source
in setting up the current flow, manifest in the appearence of fields,
since there is no dissipation. Thereafter, no further work is needed.
.
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