Answer:
Volt
Step-by-step explanation:
According to Ohm's Law

where,
I = Current
V = Voltage
R = Resistance
The current can be thought as the total number of electrons that going through the circuit.
The resistance is the property of a condutor that resists the movement of electrons.
The voltage measures the amount of difference in potential in the circuit. The flow of electricity will only take place if there exists a difference in potential. This can be also considered as the force that pushes the electrons in the conductor.