Propeller Head Plaza

OK, I'll go first

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This Post Has Been Edited by the Author

In Reply to: RE: "How electricity flows in an AC circuit" posted by geoffkait on May 02, 2022 at 06:24:52

What makes the speaker driver work? It's the interaction of the moving electric field carried by the speaker cable interacting with the large permanent magnet attached to the driver. Already we have established that the Poynting vector can't be the signal. But what we have shown already is the audio waveform is the combined push and pull of the two + and - wires of each speaker cable. And what produces the electric field? That's the current, which is calculated by the number of moving electrons. So, at the end of the day electrons are the "audio signal."

The Poynting vector is just a calculated value based on the electric and magnetic fields and points toward the speakers. But the Poynting vector doesn't produce the audio signal (waveform).the alternating current does. Just because the energy flows outside the wire does not mean the signal travels outside the wire. We have shown that the "signal" is actually the current so the "signal" does travel back and forth since it's an AC circuit.

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