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Ohm's Law Calculator
V = I × R | P = I × V
Voltage, V (Volts)
Current, I (Amps)
Resistance, R (Ohms)
Enter any two values to calculate the rest + power
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Ohm's Law:
V = IR. Power P = IV = I²R = V²/R. Named after Georg Ohm. Applies to resistive (ohmic) components where current is proportional to voltage.