alternating current (AC)
In direct current the charge carries always flow in the same direction, while in alternating current they change direction repeatedly, meaning overall there is no net direction.
This is known as a direct current or DC. The two major types of currents are AC (alternating current) and DC (direct current). In AC the charges move back and forth, but in DC the charges flow in JUST ONE DIRECTION. Due to this characteristic it will not reverse direction like AC can.
An electric current is a movement of charges, and it is measured in amperes or just amps. An ammeter is used to make this measurement. Current flow is a scalar quantity, and it refers to the number of charges passing a given point per unit of time.
-- the current in the arc -- your definition of 'intensity'
The flow of electric charges is current.
A Direct Current or DC direct current is a current consisting of charges that flow only in one direction.
Conventional current flow is the flow of positive charges, or the equivalent flow of positive charges. That is, if what flows is really negative charges (for example, an electron), which flow in one direction, the "conventional current" flows in the opposite direction.
Polarity
It is called an alternating current
Alternating current would fit this description.
An Electric Current :)
From your question it sounds like alternating current.
That is called an electrical current, or just a current.
. . . then that would be alternating current, or simply, 'AC'.
no idea man
From your question it sounds like alternating current.
In direct current the charge carries always flow in the same direction, while in alternating current they change direction repeatedly, meaning overall there is no net direction.