Load Resistance and Max Power

Discussion in 'Homework Help' started by gengm, Apr 11, 2010.

  1. gengm

    Thread Starter New Member

    Apr 7, 2010
    23
    0
    Here is the problem
    [​IMG]
    I know the open circuit voltage, and the current and resistor on the other side of the terminal pair, but how do I go finding the load resistance?
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    What is the voltage drop ofer the 8 Ohm resistor?
    What is the difference between open and 8 Ohm load?
    How many resistance is needed to drop this difference at 20A?

    Bertus
     
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  3. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,962
    1,097
    The "black cox" contains a ideal voltage (Vth) connect in seres with Rth resistor.
    If R_load = ∞ then Vo = Vth
    And now if we connect R_load = 8Ω
    Vo = 8Ω * 20A = 160V so 20V is now drop on a Rth resistance.
     
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