Here you have the possibility to calculate the voltage, the current, and the resistance according to Ohm’s Law.
U = I x R
For Example:
A 12 V circuit has a resistive load with the resistance of 3 ohms.
Which current results from these specifications?
V = I x R
I = V / R
I = 12 V / 3 Ω
I = 4 A
Measuring Units:
Voltage V = Volt [V]
Current I = Ampere [A]
Resistance R = Ohm [Ω]