Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law (V = I × R) and the power equation (P = V × I).
Ohm's Law: V = I × R
Calculate:
2 A
0 A100 A
A
6 Ω
0.1 Ω10,000 Ω
Ω
Common Voltages:
Calculated Voltage
12.000 V
⚡Voltage
12.000 V
🔌Current
2.000 A (2000.000 mA)
📏Resistance
6.000 Ω
💡Power
24.000 W
Energy Consumption:
Energy per hour: 0.0240 kWh
Energy per day: 0.5760 kWh
Energy per month: 17.28 kWh
Formulas Used:
V = I × R
I = V / R
R = V / I
P = V × I
What is Ohm's Law?
Ohm's Law is a fundamental principle in electrical engineering that states the current through a conductor between two points is directly proportional to the voltage across the two points. Mathematically expressed as V = I × R, where V is voltage (in volts), I is current (in amperes), and R is resistance (in ohms).
Ohm's Law Triangle
🔺
V
I
R
Cover the quantity you want to find:
V = I × R | I = V ÷ R | R = V ÷ I