The electric current is given by:
I = V / R
Corresponding units:
ampere (A) = volt (V) / ohm (Ω)
This formula is derived from Ohm's law. Where we have:
V: voltage
I: current
R: resistance
If the electric power and the total resistance are known, then the current can be determined by using the following formula:
I = √(P / R)
Corresponding units:
Ampere (A) = √(Watt (W) / Ohm (Ω))
Where P is the electric power.