Answer:
Battery is the source of electrical energy which will help the charge to flow through a medium.
Battery is a constant source of potential difference which will create constant potential difference across the ends of a conductor where it is connected.
When a charge is passed through the constant potential difference then the change in electrostatic potential energy will give kinetic energy to the charge.
It is given as
[tex]q\Delta V = \frac{1}{2}mv^2[/tex]
so here charge will continuously flow through the conductor across which potential difference is applied by the battery. This constant motion or flow of charge is known as electric current.