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

 

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.

 

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

 

gracias