Maximum Power Transfer:

For any power source, the maximum power transferred from the power source to the load is when the resistance of the load is equal to the equivalent or input resistance of the power source .

Apply Thevinins theorem:

Find Thevinins equivalent impedance.

1.Open the load resistor.

2.Open Current Sources and Short Voltage Sources.

3.Calculate the Open Circuit Impedance. This is the Thevenin Impedance ().

Redraw the circuit:

Observe the circuit:

 can be written in complex form as .

 can be written in polar form as