Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law
How to Use
- Select what you want to solve for: voltage, current, or resistance
- Enter the two known values
- View the calculated result and power
- Use the formulas to understand the relationships
Frequently Asked Questions
What is Ohm's Law?
Ohm's Law describes the relationship between voltage, current, and resistance in electrical circuits. The formula is V = I × R, where V is voltage in volts, I is current in amperes, and R is resistance in ohms.
How is power calculated?
Power can be calculated using P = V × I (watts = volts × amps), P = I² × R, or P = V² / R. Power is the rate at which electrical energy is consumed or generated.
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