Hello, I have some physics homework but I can’t solve this:

I know that the result of the resistance from point A to B is 4.3Ω (because my teacher told me) but I don’t know how to solve it

Please help me, I need some instructions!

Thanks, Dren.

 

One way to do it is to make use of the Y-Delta transform. See post #13 in this thread:

http://forum.allaboutcircuits.com/showthread.php?t=8668&page=2

for an example of a similar problem.

Also see:

http://en.wikipedia.org/wiki/Y-Δ_transform

Apply the transform to R1, R2 and R4 in your problem and you'll get a circuit that will be solvable as some parallel and series combinations.

 

Thanks a lot bro. The info from Wikipedia helped me so much.

Thanks, Dren