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Ohm's Law Calculator
Inputs
Voltage (V)
(V)
Electrical potential difference in volts
Current (I)
(A)
Electrical current in amperes
Resistance (R)
(Ω)
Electrical resistance in ohms
Reset to defaults
Results
Voltage
—
Current
—
Resistance
—
Power
—
Electrical power dissipated
Formula
V = I × R, P = V × I, P = I² × R
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