# Electronic – How does one measure the power factor

measurementpowerwatts

How does one measure the power factor?

$$\text{power factor}\equiv\frac{\text{power}}{|V||I|}=\frac{R}{\sqrt{R^2+(1/\omega^2C^2)}}$$

for an RC circuit driven with \$V(t)=V_0\cos{(\omega t)}\$.