# help me solve total resistance

Discussion in 'Homework Help' started by terrakota, May 20, 2005.

1. ### terrakota Thread Starter Well-Known Member

Feb 8, 2005
67
1
hi,

can u help me to solve the total resistance of this schematic?

i think is 25k, but when i measure with multisim it givsme 13k

thanks for any help

2. ### David Bridgen Senior Member

Feb 10, 2005
278
0
The combination of R1, R2 and R4 is in parallel with R3. It follows that the combination of R1,2,3 and 4 is less than the value of R3.

3. ### atferrari AAC Fanatic!

Jan 6, 2004
2,646
759
Hola Terrakota:

"Thinking" with the sense of your posting makes no sense. Instead, you have three options:

1 - Use any program (you did) to calculate for you.

2 - Breadboard that (95 seconds if all resistors available) and measure.

3 - Calculate it using delta-wye tyransforms. Simple to do even if at the begining it seems difficult.

I used delta-wye once to solve the famous resistor cube. You could look here:

http://cablemodem.fibertel.com.ar/atferrari/ in "Theory, design & calculations"

¡Buena suerte!

Agustín Tomás

Feb 8, 2005
67
1
gracias