Ohm's Law Calculator
Calculate voltage, current, or resistance using Ohm's Law (V = I × R). Enter any two values to automatically calculate the third value.
Ohm's Law Calculator
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How to Use:
- 1. Enter any two known values (voltage, current, or resistance)
- 2. The third value will be calculated automatically
- 3. Power consumption is also calculated and displayed
- 4. Use the "Clear All Values" button to start over
About Ohm's Law
Ohm's Law is one of the most fundamental principles in electrical engineering and electronics. It describes the relationship between voltage, current, and resistance in an electrical circuit.
The Formula:
V = I × R
- V = Voltage (measured in volts)
- I = Current (measured in amperes)
- R = Resistance (measured in ohms)
Common Applications
- • Designing electrical circuits
- • Calculating power consumption
- • Selecting appropriate resistors
- • Troubleshooting electrical problems
- • Determining wire gauge requirements
- • LED circuit design
Safety Tips
- • Always turn off power before working on circuits
- • Use proper safety equipment and tools
- • Verify calculations before implementing
- • Consider safety margins in your designs
- • Consult a qualified electrician for complex work
- • Follow local electrical codes and regulations