Electric current starts from electrons’ movement. Electron is a subatom, and it has 1.60217662 × 10e-19 C in it. Electric current is very similar to the flow of water. Let’ see belows.
Water drips and turns the water wheel to generate power.
Waterwheel's rolling resistance to water drop and water drop can be modeled as a single electric resistance, voltage source each.
Electrons can flow through conductors like metal, semiconductor.
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