current

The Current is flow of Electric charge Carrier in which we can harness to do work. 

Current is the rate at which charge is flowing.

Electric charge also known as electron.

There is two type of current :

1. DC current. (Direct current)

2. AC current. ( Alternating current)

1. Direct current

                      In Dc Current flow of Electric charge in one direction. It is steady state of constant voltage circuit.

2. Alternating current

                        In Alternating current (AC) is the flow of electric charge that periodically reverses direction.