The charged particle that flows through circuits is an electron.
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.
Two-way current is called alternating current (AC). In AC, the flow of electric charge periodically reverses direction, unlike direct current (DC) where the flow of electric charge remains in one direction.
The opposition to the movement of charges flowing through a material is called resistance. It is a property that determines how strongly a material resists the flow of electric current.
alternative current Alternating current is produced by a type of generator called an alternator. Direct current is produces by a generator called a dynamo, or by rectifying altenating current, or solar panels, or cells and batteries.
impedance
In a DC circuit . . . resistance. In an AC circuit . . . impedance.
Transferrer
"Opposition to current" can refer to resistance, reactance, or impedance.
The resistance is called impedance, and is equal to the measured voltage divided by the measured current, through Ohm's Law (V = ZI, Z = V/I).
In the simplest case, that would be resistance - but there is also another type of opposition (only relevant for AC) called reactance. The combined effect of resistance and reactance is called impedance.
"alternating"
It's alternating current
Alternating current aka AC.
AC current (alternating current) like in a wall outlet
An electric current that periodically changes direction is called an alternating current (AC). In AC circuits, the flow of electric charge reverses direction many times per second, typically at a frequency of either 50 or 60 Hz. This is in contrast to a direct current (DC) in which the flow of electric charge remains constant in one direction.
Rectification