C Pikabu, comment to the article on electricity. The most obvious and understandable explanation I know.

See - in essence, the current is the movement of charges from point A to point B. Well, even the name is such, for example, the current of money - money flows from the pocket A to the pocket B.
The charge is moving.
The physicists are evil people, and they have come up with the idea that a charge cannot move on its own, there must be a particle that carries that charge. For example, you take an ebonite ball out of a box, rub it with wool (electricise) and throw it into your friend. If you have a dot of balls, you create an electric current because you are mixing the charge from point A to point B.
That is, the charge does not move on its own, it requires particles.
Movement must be directed, because in general the particles do not stand in place, they are constantly savored at a disco called the "Brown movement." The problem is that as long as their sausages they cannot do any work, but if they are directed in one direction, they will be able. Therefore, the concept of electrical current includes the requirement of direction, in order to distinguish the normal working movement of particles, from the useless stroke of the Brown movement.