The correct answer to this question is the electric current. There are two types of electric currents. One is AC, which stands for alternating current. This current is when the flow of electric charges is always changing.
The other type of electric current is DC, which stands for direct current. It is the flow of electricity that just goes in one direction. Electric currents are measured in ampere.
It can be abbreviated with the letter A, as well as the word amps. To calculate a current, one would use the Ohm's Law, which is I equals V divided by or over R