Question

Three resistances R1, R2 and Rg are connected
in parallel. Derive an expression for the
equivalent resistance of the combination.
In the following figure, find the equivalent
resistance between the points A and C.
4+3
2 12
WWW
2 Ω 3.5 2
www
B
A
un
с
WWW
w
622
www
6 Ω
4 (NK)
4​

Answer 1

Answer

Explanation:

From pt B to C, resistances are in parallel

1/R_BC = 1/2 + 1/6 + 1/6 = (3+1+1) /6 = 5/6

R_BC = 6/5 OHM

Now, resistance between A and C are in series

R_AC = 2 + 3.5 + 1.2 = 6.7 ohm

Ans.