SpecCalc Hub

Ohm's Law Calculator

Calculate voltage, current, resistance and power relationships.

Status
live
Type
Calculation
Risk
Low risk
Group
General electrical

Interactive block

Voltage20 V
Power40 W

Client-side estimate. No input is stored by SpecCalc Hub.

Reference formula

This simplified formula block is educational and depends on the page status and limitations.

V = I x R; P = V x I
V
voltage
I
current
R
resistance

Graphics

Single-phase circuit diagramSourceL / NLoadswitch / protection
Simplified educational single-phase circuit diagram.

This calculator provides an estimate for informational purposes only. It is not a certified engineering design, electrical safety approval, or professional installation recommendation. Always verify final decisions with a qualified professional and applicable local codes.