Very simple equivalent resistors help

[magician13134]

Hi, I'm having a little trouble with a problem about equivalent resistance. I'm just having trouble determining if the resistors in these problems are in parallel or not. And if they aren't I'm not quite sure what to do. Any help is greatly appreciated.

**broken link removed**

 

[dougy83]

Considering that terminals a & b are not connected to anything, the 5ohm resistor on the left can be ignored. Then you should be able to see that the 3, 6, 3 ohm resistors are in series (this series string is in parallel with the other 5 ohm resistor - and that parallel unit is in series with the other two 5 ohm resistors), among other things.

Req = 5 + 6 || (3 + 6 + 3) + 5

 

[magician13134]

Gahhhh! That's so SIMPLE! I spent so much time trying to figure out if the two 5s, 3s and 6s could all be considered parallel with each other, that I forgot the obvious. Thanks so much for pointing that out to me. I need to sit down and do a few dozen of these to get really sharp at them. Thanks again!

 

[krytenrobot]

you have a 12ohm(6 ohm +3ohm+3ohm) in parallel with a 6 ohm, that = 4 ohms,which is in series with with the two 5 ohm resistors, that makes 14ohms in total!!


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