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RE: "How electricity flows in an AC circuit"

The energy flux density, I.e., the Poynting vector, is the cross product of the E and B fields that alternate with each other along the axis of the conductor. The E and B fields are orthogonal to the axis of the conductor and to each other. That's why it is said the "signal energy" lies outside the conductor. But it's also true that the E and B fields are produced by the motion of the free electrons. Which came first, the chicken or the egg?

Recall there are two conductors in audio, + and - you can call them, each one Carrie's half the audio waveform, you could say. It's the alternating motion of free electrons that create sound in your room. Hel-loo! Try to escape your reality tunnel.

Todays tip: audio cables are not waveguides nor do they act like waveguides.


Edits: 08/13/22 08/13/22 08/13/22 08/13/22
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