Why the flow of charge in electric circuit is from negative to positive terminal? Explain this in brief.
Direction of the electric current
It is well known that current is the flow of negatively charged particles i.e. electrons. Since like charges repel each other and unlike charges attract each other, the negative terminal of the cell pushes the electrons, and the positive terminal attracts them.
Hence, the electrons flow from the negative terminal of the battery to the positive terminal via the electric components such as the bulb placed between them.
Conventionally, the direction of an electric current is taken as opposite to the direction of an electric charge. Hence, electric current flows from the positive terminal to the negative terminal.