Question

Plz give the answer.

Answer 1

Answer:

R=3/4

Explanation:

as we can see that first three are in parallel.......

1/Req=1/R+1/R+1/R

=3/R

Req=R/3

also one r is in series

therefore,

Req=R/3+R

1=4R/3

R=3/4

Answer 2

Answer:

3r in small loop parallel, so r/3 joined by r in series so topmost branch =4/3r which is in paralllel to bottom branch having r resistance

so total is

4r/7

Explanation:

between red dots in the fig no. potential drop so u can join them.