Question

15.
Find the equivalent resistance between points A
and B, if each resistor is of resistance r.
A
M
WW
B
4r
(1)
2r
3
(2)
16
3
(3)
(4)
3​

Answer 1

Answer:

Here is the answer

Explanation:

Equivalence resistance = 2r/3

Steps

1/R = 1/2r+1/r = 3/2r  

R = 2r/3

same in all the four sides  

Now

R' = 2r/3+2r/3 = 4r/3

Eq. R = 3/4r+3/4r = 2r/3