Answer:
The difference in potential at two points in a wire causes electric current in a wire.
Step-by-step explanation:
Electric Current:
The flow of Electric charges is called Electric Current.
An electric current is said to exist when there is a net flow of electric charge through a region. In electric circuits this charge is often carried by electrons moving through a wire.
Electrons move in a wire from lower potential to higher potential because, positive charge attracts the negative charge and causes it to move towards itself.