You might think that electric current flows in the same direction as electrons, but you would be wrong.

Electric current is defined to be a flow of electric charge. That definition implicitly assumes that the charge is positive. But in practice, it is much easier to create electric current through the flow of electrons, which carry negative charge. So, we need to understand how the definition of electric current changes when the polarity on the charge that flows is negative. By a more generalized definition, electric current is either: (1)the positive flow of positive charge, or (2) the negative flow of negative charge.

Since it is much easier to create electric current through the flow of electrons, which are negatively charged, we must flip the direction on our normal understanding of electric current as flowing charge, when considering typical electricity. The definition of electric current forces us to characterize its direction as negative with respect to the flow of electrons.

So, the flow of any electric current composed of electrons is in the direction opposite to the flow of the electrons. This must be true simply because electrons carry a negative charge, but electric current is defined in terms of positive charge.

Thus, by definition, electric current flows in the opposite direction of electron flow.