Define conventional and actual direction of current flow with diagram.

Conventional direction of current flow. The direction of current flow from positive to negative end of a battery is called conventional direction of current flow. Ina circuit the conventional direction of current flow is shown. 

Actual direction of current flow is the direction of flow of electrons from negative to positive end of a battery is called actual direction of current flow.This direction is not shown in circuit.

Conventional Current assumes that current flows out of the positive terminal, through the circuit and into the negative terminal of the source. ... The direction of current flow does not affect what the current does. In general, high school Physics and two year technician programs use Electron Flow.Scientists agree to use a convention which shows the direction of the electric charge flow (the current) in a circuit as being from the positive terminal of the battery towards the negative terminal.The direction of flow of positive charge is taken to be the direction of electric current. Thus, a flow of negative charge contributes to an electric current in the opposite direction.

Also, since electrons move from lower potential to higher potential in an electric field, the current thus flows the opposite and it is easier to visualize current flowing from a higher potential to a lower potential.During the discharge of a battery, the current in the circuit flows from the positive to the negative electrode. According to Ohm's law, this means that the current is proportional to the electric field, which says that current flows from a positive to negative electric potential.