details of what is happening with A/C electricity

I understand that A/C creates power like a water hose alternating
pressure back and forth. I also see that the power plants' ground/
neutral is the other half of the supply which gets moved back and
forth.

1. How can I understand the physical actions of electrons and energy
by comparing the A/C alternating sine wave and the idea of water/
energy flowing back and forth from a "hot" line and a "neutral" line?

Jacques

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