Day Twenty-Three - Apparent Power and Power Factor

Hey guys, today we continue to talk about power, especially on complex power and power factor.

The purpose of this lab is to see the complex power on the circuit.

Pre-Lab:

Above is our calculated values of the circuits with R(load) = 10, 47, 100 ohms.

Lab Result:
Our resistors have the values of 9.8, 47.1, and 99.3 ohms.

With the ten ohms resistor,

Our rms values of load voltage is 627mV, and the load current is 18.7mA with the phase difference 64.44 degree.

With the 47 ohms resistor,

Our rms values of load voltage is 625mV, and the load current is 10.68mA with the phase difference 36.828 degree.

With the 100ohms resistor

Our rms values of load voltage is 660mV, and the load current is 6.22mA with the phase difference 12.6 degree.

Comparing the values:

Summary:
From the graph above, we can conclude that our experimental value and theoretical value falls into similar values, so we successfully verify the apparent power equation Irms*Vrms = Power, and the power factor is cos(V-I). We can even conclude that even with the same amount of reactive element, changing the resistance value will change the phase because the real part is changed.