Electric current cannot be considered a vector quantity despite its directional nature because it does not follow the law of vector addition. 15
For a quantity to be considered a vector, it must obey the laws of vector addition, which state that vectors can be added together to yield a resultant vector. 1
While current does have a direction (from positive to negative), it does not behave like a vector in terms of addition. 1 For instance, if two currents flow in the same direction, they add up algebraically. 1 However, if they flow in opposite directions, they subtract from one another rather than forming a resultant vector in a traditional sense. 1
Instead, current follows the principle of superposition, where currents can combine linearly but do not create a resultant vector that can be represented in a multi-dimensional space. 1