# How to solve this exercise to find maximum average power

How can I proceed to solve this exercise? I know that pMAX= |VTh|^2 / 8 * RTh

I tried to calculate the Thevenin Resistance, but I didn't manage to do it, because I can't put together anything in parallel or in series so I really don't know how to find it here.

For the Thevenin Voltage I have the same problem, I don't know which "tactics" I could use here to find the voltage.

• You need to tag this as homework. Then search web for something like this. Nov 10, 2020 at 19:35
• @relayman357 sorry I didn't know I had to tag as homework, anyway i know the formula of the maximum power transfer but I dont know how to find the Thevenin Voltage
– user266743
Nov 10, 2020 at 19:39

To find the Thévenin voltage, Vth, take ZL out and then find the voltage that is developed between A & B due to your source (where A & B are the terminals of ZL in your drawing). Vth is also known as the "open circuit" voltage.

To find the Thévenin impedance, Zth, kill the source, remove ZL, and then find the equivalent impedance between points A & B.