Which Way Does Current Flow In A Circuit Diagram. The current in a series circuit depends upon the number of cells. This has come to be known as conventional current flow.
In the case of a diode to simplify things somewhat---see Stevens answer for some special cases conventional current flows through the diode from the anode to the cathode. That is conventional current flows in the direction that the arrow of the diode symbol is pointing. Hence it does not make a difference.
Current flows from emitter to collector not exactly the purpose transistors were designed for.
The positive sign for current corresponds to the direction a positive charge would move. In a torch the battery provides the flow of charges which means the bulb in the torch glows due to the electric current. Direction of current flow in circuit analysis. This was the convention chosen during the.