1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Thevenin equivalent circuit with a load

  1. Oct 27, 2009 #1
    1. The problem statement, all variables and given/known data
    Show that if a battery of fixed emf E and internal resistance R1 is connected to a variable external resistance R, the maximum power is delivered to the external resistor when R=R1

    2. Relevant equations
    Power = R * I^2

    3. The attempt at a solution
    We can think of problem as divide-by-two voltage divider and the power transferred to load is maximized when the load resistance is equal to the Thevenin resistance, but I don't know how to proceed.
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted