Question

calculate the equivalent resistance of the network across the point A and B
shown in the figure​

Answer 1

22.5 ohms is the answer to this question.

Let R1 30 omh

RE 30 Ohm

R3 15 ohm

R4 15 ohm

Eq. resistant of R1 and R2= (1/30+1/30)^-1

=15ohm

Eq. resistance of (R1 R2)and RE=(1/15+1/15)^-1

=7.5 ohm

Ek resistance between point A and B=7.5+R4

=7.5+15

=22.5 ohm