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 flow of electric charges is current.
-- the current in the arc -- your definition of 'intensity'
When charges continually shift direction, alternating currents (AC) are present. AC involves charges oscillating back and forth in a circuit, with the direction changing periodically. This is different from direct current (DC), where charges flow consistently in one direction.
A current consisting of charges that flow only in one direction is called direct current (DC). In DC, electrons flow continuously in one direction from the negative to the positive terminal of a power source.
That is called an electrical current, or just a current.
Polarity
Alternating current would fit this description.
From your question it sounds like alternating current.
The direction in which a current-carrying wire is forced in a magnetic field is perpendicular to both the direction of the current and the magnetic field according to Fleming's left-hand rule. Moving charges are also forced in a direction perpendicular to both the direction of their motion and the magnetic field according to the Lorentz force equation.
. . . then that would be alternating current, or simply, 'AC'.
Current intensity refers to the flow of electric charge through a conductor in a specific amount of time. It is measured in amperes (A) and represents the rate at which electric charges pass through a given point in a circuit. High current intensity can lead to overheating and damage to electrical components if not properly controlled.
The net movement of electric charges in a single direction is called electric current. This current flows through a conductor, such as a wire, and is responsible for carrying electrical energy from one place to another. It is measured in Amperes (A).
In a conducting material, the moving charges that make up an electric current are electrons. In an electrolyte solution, the moving charges can be ions, both positively and negatively charged, depending on the direction of the current flow.
From your question it sounds like alternating current.