Ohm's Law Calculator
Enter any two known values, leave the others empty, and click Calculate.
Results
Voltage (V)
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Current (I)
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Resistance (R)
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Power (P)
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Ohm's Law Formulas
- V = I x R
- I = V / R
- R = V / I
- P = V x I
- P = I2 x R
- P = V2 / R
Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.