Ohm's Law Calculator
Calculates current and power from voltage and resistance.
Lilu Baba's Ohm's Law Calculator computes current and power instantly from voltage and resistance.
How to use this calculator
- Enter the voltage across the circuit.
- Enter the resistance.
- Current and power update instantly using Ohm's Law.
Current (Amps)
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Power (Watts)
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FAQ
Ohm's Law Calculator — frequently asked questions
V = IR, relating Voltage, Current and Resistance in an electrical circuit.
Power = Voltage × Current, once current is derived from Ohm's Law.