Really simple Resistor question NEED HELP

[Larrytsai]

So i have a general question that I came across with source transformations, but this question can be classed as a beginner question.

When I find the equivalent resistance, how do you determine whether or not it is in series or parallel with a source?

 

[Maz88]

when the resistors have equal voltage then they are in parallel. and when they have equal current then they are in series :)

 

[Larrytsai]

umm can you explain a little more, I don't understand.

 

[Larrytsai]

I don't understand how I could use that to determine whether or not my equivalent resistance is in parallel or series with sources

 

[fss]

Your question doesn't make much sense. "Equivalent resistance" can be either in series or in parallel with a voltage source, depending on what equivalent resistance you're talking about in a circuit.

 

[Larrytsai]

Sorry, can you look at this question http://www.cramster.com/solution/solution/727803
if you look at the 10 and 40 ohm resistor, why is it when you find their equivalent resistance, they are in series after.

 

[Larrytsai]

oh k nvm i got it thnx.

 

[Mindscrape]

When resistors share the same nodes they are in parallel, when they only share one common node (with no other resistances nodes sharing that common node) they are in series.