The riddle of the electric current is explained, firstly, by the fact that currents do not run inside the conductors, but around them, in the ether layer adjacent to the conductor.
And, secondly, the fact that quanta of electrical energy are right and left electrons. The difference is determined by the inversion of their magnetic poles.
The inversion of the magnetic poles of electrons determines their opposite motion in space. Right-hand electrons generate a negative alternating current half-wave. Left-handed electrons generate a positive alternating current half-wave.
Left electrons open p-n junctions, they also charge and discharge batteries, left electrons form a plus half-wave of an alternating current, right and left electrons can transform into each other.
The left electrons charge the Earth's ionosphere, the right electrons charge the Earth's surface through lightning.