Question

Find the equivalent resistance between points A and B.

Answer 1

Let RP be the equivalent resistance of the resistors 12 Ω, 6 Ω and 4 Ω connected in parallel. Hence, we have

`1/R_p = 1/12 + 1/6 + 1/4`

`= (1+ 2+3)/12 = 1/2`

R_p = 2Ω

Therefore, the equivalent resistance of the circuit is

2Ω + R_p + 5Ω = 2Ω + 2Ω + 5Ω = 9Ω

Thus, the equivalent resistance between points A and B is 9Ω .