Electrical Engineering
Ohm's Law Calculator
⚡ V = I × R
Calculate voltage, current, resistance, and power in electrical circuits.
Input Values
Voltage (V)
V
Potential difference in volts
Current (I)
A
Current in amperes
Resistance (R)
Ω
Resistance in ohms
Power (P)
W
Power in watts
V
Voltage
=
I
Current
×
R
Resistance
Power
0W
Power Dissipated
0 W
P = V × I
Voltage
0 V
Current
0 A
Resistance
0 Ω
Power
0 W
📊 Detailed Breakdown
| Quantity | Value | Formula |
|---|
How the formula works
V = I × R | I = V / R | R = V / I | P = V × I = I² × R = V² / R
- Voltage (V) = Current × Resistance
- Current (I) = Voltage / Resistance
- Resistance (R) = Voltage / Current
- Power (P) = Voltage × Current
- Enter any two values to calculate the remaining two
- Power is displayed as P = V × I