Need serious help - exam tommorow

Discussion in 'Homework Help' started by warg85zak, Aug 28, 2013.

  1. warg85zak

    Thread Starter New Member

    Aug 28, 2013
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    [​IMG]
    Can anyone solve this for me? I missed the lectures going over it, i know the basic principles but both these questions stumpped me.
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,498
    2,364
    What did you come up with so far?
    Show all working! ;)
    Max.
     
  3. warg85zak

    Thread Starter New Member

    Aug 28, 2013
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    Unfortunately i don't have a scanner but after taking the reading at 3v i got 1.4v across the nodes A and B?
     
  4. warg85zak

    Thread Starter New Member

    Aug 28, 2013
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    P.s my exams tommorow :(
     
  5. warg85zak

    Thread Starter New Member

    Aug 28, 2013
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    It is pretty much guaranteed to come up in the exam, just with different values... hopefully easier than this example.
     
  6. jegues

    Well-Known Member

    Sep 13, 2010
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    I guess you better learn it then.

    We aren't going to help you until you post some of your work.


    Good thing by using LaTeX you can type all your work.
     
  7. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,157
    Cellular Telephones in this day and age come with camera's.
     
  8. Austin Clark

    Member

    Dec 28, 2011
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    Just do a google search:
    http://en.wikipedia.org/wiki/Superposition_theorem

    I don't have a formal education in electronics, and so I've never had to solve something like this (Heck, I've never even heard of that theorem until now).
    But I'll share my answers (which I don't know are correct) if you share yours.
    It's justified because neither of us are 100% sure.
     
  9. WBahn

    Moderator

    Mar 31, 2012
    17,715
    4,788
    What do you mean "taking the reading at 3V"?

    Both problems can be solved by inspection in your head performing onlly the following arithmetic compuations (some more than once) between the two problems:

    3+9, 5+5, 25+1, 5*5, 5*6, 3/1, 10/2, 15/3.

    (This might be enough of a hint to help you along.)

    So when you say that you know the basic principles, the evidence is to the contrary. Which is fine. We were all there (and still are, just about other things, now). But you won't be able to overcome weaknesses in your understanding of the basic princples until you recognize that you do, in fact, have them. Until then, you will actually just be searching for a bunch of bandaids to address the symptom-of-the-day.

    If you can't scan an image or take a photo or use the LaTex equation tool that is part of the forum tools, then talk through what you know and what you think you need to figure out in order to solve the problems.
     
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