How Do You Calculate the Voltage Across a Resistor in a Complex Circuit?

[noofie]

Homework Statement

    -------R1---------
   l                   l                          R1=5 ohms
----  V=120            l                          R2= 11 ohms
  -                   R2                        R3= 6 ohms
  l                     l                          R4=8 ohms
  l                     l                          R5=4 ohms
  l              ------------
  l              l            l
  l              l            l
  l              R3           R4
  l              l            l
  l              l           R5
  l              ------------
  l_____________l

Q: find the potential difference across the 4.0 ohm resistor

Homework Equations

The Attempt at a Solution

V= IR
V/ (R1+R2)

(V/(R1+R2)) / 2

((V/(R1+R2))/2) x ((1/R4)+(1/R5))^-1

 

[G01]

I'm sorry, I'd try to help if i can, but I can't understand your diagram??

 

[ranger]

Use the code tags to preserve the formatting of your characters.

use [ CODE ] [ /CODE ]*

*no whitespaces.

 

[Mentz114]

Find the total resistance of the circuit, then the current I = V/Total R.

The voltage across the 4 ohm resistor is then 4*I.

R total = R1 + R2 + 1/(1/R3+1/(R4+R5))