I got this on a quiz today - Find the equivalent resistance between E and F.
Now, the problem with this question is that I get TWO different answers when I trace from:
1. e to f
2. f to e
I know one of them is definitely wrong (or maybe both are?), but I don't know which.
The Attempt at a Solution
Now, if I go from E to F, I get:
1. Current goes through short circuit, then splits between two paths. so R4//(R2+R3)
If I go from F to E (which I've drawn in colors), I get:
2. Current splits between R3 and R4. Then following R3, it splits into R1 and R2. R4 then follows through the short circuit back to E, so R4//(R3+R1//R2)
In the end I had to pick one answer so I randomly chose 2 for arbitrary reasons. But what's the way to go about this problem, and which one is correct? (IF one of them is?)