Ohm's Law Calculator
Enter any two of voltage, current, resistance and power to get the other two with Ohm's law.
Current (I)
2 A
- Voltage (V)
- 12 V
- Resistance (R)
- 6 Ω
- Power (P)
- 24 W
Show the work
Power from the two you know
P = V to the power of 2 ÷ R
12 to the power of 2 ÷ 6 = 24 W
Current from the two you know
I = V ÷ R
12 ÷ 6 = 2 A
How it works
V = I × R · P = V × I = I² × R = V² ÷ R
Questions
- How does the ohm's law calculator work?
- V = I × R · P = V × I = I² × R = V² ÷ R.
- What do I need to enter?
- Voltage (V), Current (I), Resistance (R), Power (P). Optional fields can be left blank.
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