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RE: Two statements in OP were left addressed.

98.169.214.23

In Reply to: RE: Two statements in OP were left addressed. posted by tomservo on November 06, 2022 at 10:09:23

The paragraph I quoted was mixed up to a certain extent. That paragraph was actually referring to the energy contained in e and B fields located outside the conductor. The Poynting vector energy flux points in the direction of free electron motion. Current and voltage are scalar quantities so they do not travel or have any direction. What does travel and have direction are the free electrons, the moving charges. Free electrons are physical entities whereas current and voltage are not. This will become important on discussions of directionality.

Edits: 11/07/22 11/07/22

Follow Ups:

RE: Two statements in OP were left addressed. - sony6060 03:58:27 01/17/23 (1)
AC does flow back and forth in a coax cable or it would not be AC.
- RE: Two statements in OP were left addressed. - geoffkait 04:37:32 01/17/23 (0)
  Current doesn't flow back and forth, technically speaking. Current is a scalar quantity, it has no direction, it has no velocity, it's calculated according to amount of free electron flow, total charge per unit time. Only the free electrons move back and forth in an AC circuit. The picture of how electricity works is further complicated by adding the concept of Poynting vector and energy flux outside the conductor in electric and magnetic fields. Having said that we're stuck with common occurrence of term, "alternating current."
  
  Edits: 01/17/23 01/17/23 01/17/23

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