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View Full Version : Finding the equivalent resistance b/w a and b...


lgmavs41
Feb25-08, 07:55 PM
1. The problem statement, all variables and given/known data
The problem is to find the equivalent resistance between a to b.

2. Relevant equations
Req in series = R1 + R2 + ... Rn
Req in parallel = inverse of sum of 1/R1 + 1/R2 + ... 1/Rn
Kirchhoff's Rules

3. The attempt at a solution
Well, I tried redrawing the circuit to figure out which resistors are in parallel and which are in series but it didn't help. The 1 ohm branches off to 9 ohms and 8 ohms; 6 ohms is connected to 8 ohms which forms a series with 3 ohms...(confuses me...). Anyway, I thought I shouldn't be using the Req equations but instead will be using Kirchhoff's rules somehow. I just don't know how to apply it here in this problem. Anyone have any suggestion as to how to start solving it? Thanks in advance

http://img504.imageshack.us/img504/792/lastproblemme5.jpg (http://imageshack.us)

Mentz114
Feb25-08, 08:03 PM
There's a good tutorial and an example of using Kirchoff here -

http://physics.bu.edu/py106/notes/Kirchoff.html

lgmavs41
Feb25-08, 08:14 PM
Thanks for the link. I have some idea now on how to solve it.