It has always been baffling to me, the direction of current. When attending lectures on Electronics and even appearing on exams; the whole idea of the current flowing was very confusing and I often ruined my answer sheets with wrong references so as to the direction of the electric current.
So today, I ventured to find out the facts behind the direction of the current. Both the conventional and the flow of electrons approach.
Electric current is the rate of transfer of charge. In fact it is the ratio between charge flow and time taken for the charge to flow.
its unit is Ampere. A current of 1 ampere means that there is 1 coulomb of charge passing through a cross section of a wire every 1 second.
The direction of electric current depends upon what factors that we are considering. The flow of the positive charge or the literal flow of electrons.
The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.