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Ohm's Law Calculator
Electrical Tool
Ohm's Law Calculator
V = I × R — solve for voltage, current, or resistance. Watch electrons flow in real time.
Solve for
Voltage (V)
Solve for
Current (I)
Solve for
Resistance (R)
Voltage
12
V
Electrical potential
Current
2
A
Flow of charge
Resistance
6
Ω
Opposition to flow
Power
24
W
P = V × I
Voltage
12 V
Current
2 A
Resistance
6 Ω
Ohm's Law Formulas
V = I × R
I = V / R
R = V / I
P = V × I