The product of the fundamental voltage and the fundamental current results in a net average power delivered to the loads. On the other hand, the product of the fundamental voltage and a harmonic current result in zero net average power over one fundamental cycle. Using Excel, plot the product of a 100-V_rms 60-Hz fundamental voltage and an 80-A_rms 3rd harmonic current in 15° increments over one fundamental cycle, and verify that their product averages out to be zero over one cycle.