Lab Report Day Twenty Two - AC Average and Maximum Power

Today, we do not actually do any labs. But professor Mason uses a demo to show us how AC power works visually. 

This is a picture that when professor Mason uses AC power and DC power to light the bulb at the same voltage. We can clearly see that the one with AC is dimmer. It shows that the bulb with AC has less power. 

When professor Mason turns the voltage for AC to about 1.4 times of the DC power, they seems the same bright. This proves that Vrms = 1/sqrt(2) Vmax. The voltage we read is Vmax instead of Vrms. 

It proves that power of AC is P=Vrms^2/R. 

Summary:
Today we review inductor and average and maximum power calculation in a  AC circuits, and see a demonstration to see how rms values dictate maximum power of AC circuits.