[Circuits] Finding maximum power

1. The problem statement, all variables and given/known data



a. Find the Thevenin equivalent circuit across R_L.

b. What is the value of R_L for maximum power?

c. Calculate the maximum power that can be transferred to the resistor R_L.







2. Relevant equations







3. The attempt at a solution



a. R_th=2.88 ohm

b. R_L=2.88 ohm

c. P=154.3 mW



I have a test upcoming and we were given this as a practice question. Unfortuantely, there is no answer so I don't know if I it is correct or not. Can anyone let me know if my answers are right? I used MultiSim to check the answers for my other practice questions and I found mistakes. I can't use MultiSim to check this one.



This is the other similar problem that I need to make sure I have done correctly: http://ift.tt/1cVVTfR



My answer: P=69.4 mW