Question

Pls help me with this Physics question.....

What is the effective resistance between A and C (see attached file)

Answer 1

3ohms? its been awhile since i've taken my electronics course haha

Answer 2

Thanks!
Can u pls give the detailed explanation.....

Answer 3

moving to the right from point a you find two resistors they are in parallel because there are two directions to go combine them into one stream using formulas, same with the two to the left of point c they are in parallel combine into one stream then combine the middle and you should be left with 3 resistors on the perimeter of the triangle in a series add them up and you get 3 ohms

Answer 4

Hi Johnny, I had a different answer than this and that has now been confirmed by 3-4 people. The answer is 0.5 ohm...

if you observe carefully, the upper part of the circuit forms a wheatstone bridge. You can look this up on the website http://en.wikipedia.org/wiki/Wheatstone_bridge

so the resistance of 1 ohm (which is vertical) can be removed as shown in the below diagram because no current flows through it. So, we are left with a simple parallel connection of three resistors of value 2 ohm, 2 ohm and 1 ohm
so the equivalent resistance between A and C becomes
R = 0.5 ohm

Answer 5

Still thanks for making the time and putting in the effort to help me. It is appreciated....☺