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ARTPHASE ENGINEERING NOTES

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Engineering Notes

Motor Control VFD & Drives Power Quality MCC & Control Panels Industrial Power

Engineering Tools

Drive System AnalyzerThermal AnalyzerFuture Tools

Resources

Calculations References About Contact

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Calculations

Ohm’s Law & Basic Power Calculator

Solve voltage, current, resistance, and power from two known electrical values.

Known values Voltage V Resistance Ω

Calculated values

Voltage— V

Current— A

Resistance— Ω

Power— W

Relationship

V = I × R; P = V × I = I²R = V² ÷ R

Engineering note

The V, I, R, and P relationships shown apply directly to DC and purely resistive circuits. AC circuits with reactance require impedance and power-factor relationships.

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