// The three Ohm's Law forms V = I × R← voltage from current × resistance I = V ÷ R← current from voltage ÷ resistance R = V ÷ I← resistance from voltage ÷ current
// The power triangle P = V × I = I² × R = V² ÷ R
Circuit · magnitudes shown to scale
Power Triangle (DC / resistive load)
In a pure-resistive DC circuit, power (P) equals voltage times current. The triangle stays as a straight line — apparent power (S) equals real power (P) because there's no reactive component.
⚡ Educational visualization only. Ohm's Law applies to linear resistive DC circuits and RMS values for AC-resistive loads. Real circuits include reactance, temperature effects, and non-linear devices. Always design for actual conditions and verify with your code book (CEC / NEC) before installation. This tool does not replace a licensed electrician.