help !!!!!!!!!

Discussion in 'Homework Help' started by beemovie, Dec 19, 2008.

  1. beemovie

    Thread Starter Member

    Dec 19, 2008
    12
    0
    Can anyone help me solve this questions from the circuit attached I am still a beginner...

    Showing all working find:
    a)What is the reading of the voltmeter when the load resistor RL is removed ?

    b)Determine the readings of the voltmeter when the load resistor RL is set to each of the following values 100ohms and 10,000 ohms

    c)With respect to part(b),which value of RL makes the voltage source appear stiff ?
    -------------------------------------------------------------------
    please someone help me solve this question 10x alot
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
  3. beemovie

    Thread Starter Member

    Dec 19, 2008
    12
    0
    Hi !!

    yes it's a school question I worked almost 20 questions related to it but I can't solve this I think that I can't work this question bacause of the circuit diagram it looks quite complicated for abeginner like me thats why I am asking in this forum
     
  4. vvkannan

    Active Member

    Aug 9, 2008
    138
    11
    hello beemovie,
    a) when load resistor is removed it becomes an open circuit and hence no current flows through the 10ohm resistor and hence no drop across it.The entire drop is across the open circuit and the voltmeter reads 20v approximately.
    b)for this use voltage division rule.see the link bertus has provided.
    c)a souce is said to be stiff when it satisfies the following condition

    source resistance <(.01* R load)
     
  5. beemovie

    Thread Starter Member

    Dec 19, 2008
    12
    0
    thanks a lot my friend I really appreciated your help
     
Loading...