Electric current is the electron flows rate in conductors (e.g. wire), measured in ampere SI unit.
higher ampere value = more electricity flows in circuits
Electricity is easier to imagine if seen as a river's flowing water (Fig 1). Particles called electrons come together, and the number of electrons flowing each second is the current.
Fig 1
Our ancestors could light fire with electric current.
Common device using current are mobile phones to charge the battery.
[1] See current as water flowing in a pipe. If pressure is at one end of a pipe, water is forced to flow through 1 direction.
The water flow amount corresponds to the pressure at the end, that's compared to electromotive force.
I = conventional current flow
E = electron flow
Conventional current and electron flow in opposite ways.
[1] Conventional current flow is from the positive to negative terminal, high to low potential, and shows positive charges flows' directions.
Electron flow is negative to positive terminal. Electrons are negative, thus attracted to positive terminal unlike charges attract.
[1], [2], [3] Alternating current (AC) is variable electric current flow, drawn as a sine wave.
Direct current (DC) is constant electricity flow, drawn as a straight line, unlike AC current.
Inrush current is current
Full load ampere/current (FLA/FLC) is current drawn by a device (e.g. motors, transformers) when it operates at its rated full load—it does the max work it's made for.
No load ampere/current (NLA/NLC) is current drawn by a device running without any mechanical load (for motors) or no electrical load (for transformers)—turned on but not doing any real work.
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