Resistance: find the equivalent resistance.

[LostShadow]

Homework Statement

Homework Equations

Resistors in series (in a straight line) add. Like R + R = 2R.

And if in parallel, they inversely add.

1/R_total = 1/R1 + 1/R2

So, I have no idea how to "simplify" this.

Basically trying to find the total resistance.

Thanks.

 

[gneill]

Start by identifying resistors which are in series or parallel. What do you find?

 

[LostShadow]

Resistors in series or parallel that could be in series or parallel with others resistors that could be in series and parallel...

 

[haruspex]

Start with some pair of resistors that you can analyse without having to consider a third. That could be two in series with no other resistor connected to their junction, or two directly in parallel - i.e. that make a direct connection to each other at each end. Having found such pair, figure out what the effective resistance of the pair is and replace the pair by a single equivalent resistor. Repeat.

 

[bsbs]

1) if R=1ohm

R eq= 2.5ohms

relation: (2R+R)x(2R+R) / (2R+R) + (2R+R) + R

2) inverse add last two R, answer will series add with the R in the line, u will eventually see only two R in parallel, then inverse add these last two to get your answer.