Can you explain voltage sources in series and parallel completely?

[graycloud79]

can you answer this question: https://answers.yahoo.com/question/index?qid=20140624162255AAi0PkA

 

[davenn]

can you answer this question: https://answers.yahoo.com/question/index?qid=20140624162255AAi0PkA

they are the same, the switch shorts out the globe in both circuits, its irrelevant if one is drawn above the other

Dave

 

[graycloud79]

ok let me ask another question in the same schematic drawings as similar post, let's pretend instead of light bulb, and a switch, it's a resistor in its place, doesn't the position relative to the battery indicate which branch receives current first? (even if it's a nanosecond difference) because it's closer to the + terminal than the other branches?
https://answers.yahoo.com/question/index?qid=20140624181825AAk4bUr

 

[davenn]

Marek's answer would have been what I would have told you

in the scheme of things ... its irrelevant
Start dealing with microprocessors running at very high clock speeds and then it starts to become relevant

and incidentally I could build the 3 resistor circuit you have shown and ALL 3 resistors would be the same distance from the battery !

Something you need to learn and understand...
The way a circuit is drawn as a schematic and the way it is constructed in real life are two VERY DIFFERENT things


Dave

 

[sophiecentaur]

@graycloud79
If I were you, I would start on this subject by following the basic rules and definitions and see where they lead you in a practical situation. A practical situation will always always always involve a finite (internal) resistance in series with any 'voltage source' and, when two such sources are connected in parallel, there is the likelihood of large currents flowing through these series resistances. (Different nominal emfs). Nothing magic or paradoxical here - just real life.
The notion of connecting idea voltage sources in parallel (and also connecting ideal current sources in series) is actually nonsense and hasn't any relevance to EE. Likewise, no one considers massless objects in mechanics problems or infinitely long, rigid rods and expects to get any sense out of the result.