Why flows direct current in one direction?

It doesn't go in one direction. There are 2 directions because there are 2 schools of thought here. It is because Benjamin Frankline made a mistake and we love him so much we still use his “direction” of current, namely from positive to negative. read more

Direct current flows in only one direction because electrons flow from where there is an excess of electrons, to where there is an insufficiency of electrons. In some models, this electron deficient place (the positive terminal or charge) is considered to contain “holes” - spaces that are ready to receive electrons. read more

In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. The voltage in AC circuits also periodically reverses because the current changes direction. read more

One is direct current (DC) which is a constant stream of charges in one direction. The other is alternating current (AC) that is a stream of charges that reverses direction. Let's look at DC power which was refined by Thomas Edison in the 1800s. read more