Enter any two of the following values into the calculator to compute the missing parameter.
- All Physics Calculators
- 3 Phase Resistance Calculator
- 3 Phase To 1 Phase Calculator
- 3 Phase Voltage Calculator
3 Phase Ohms Law Formula
The following equation is used to calculate a missing parameter in a three-phase system.
V = \sqrt{3} \times I \times Z - Where V is the Line Voltage (V)
- I is the Line Current (A)
- Z is the Impedance (Ohms)
To compute the missing parameter, input the known values and leave the field for the value you wish to calculate empty.
What is 3 Phase Ohms Law?
Definition:
3 Phase Ohms Law is a fundamental principle in electrical engineering that defines the relationship between line voltage, line current, and impedance in a three‐phase system.
How to Use the 3 Phase Ohms Law Calculator?
Example Problem:
The following example outlines the steps and information needed to calculate the missing parameter in a three‐phase system.
First, decide which parameter to calculate. In this example, the line voltage is left empty.
Next, input the known values. The line current is 15 A and the impedance is 10 Ω.
Finally, calculate the missing line voltage using the formula above:
V = √3 × I × Z
V = √3 × 15 × 10
V ≈ 259.8 V
FAQ
What does the 3 Phase Ohms Law Calculator compute?
The calculator computes the missing parameter (line voltage, line current, or impedance) in a three‐phase electrical system based on the provided values.
Why must one field be left empty?
Leaving one field empty allows the calculator to identify and calculate the missing parameter using the relationship defined by 3 Phase Ohms Law.
Can this calculator be used for single‐phase systems?
No, this calculator is specifically designed for three‐phase systems where the voltage calculation involves a √3 multiplier.