Question

Find equivalent resistance across A and B

Answer 1

first add series 3+3=6 and 6+6=12

then in parallel 1/12+1/6= 3/122

therefore equivalent resistance is equal 12/3=4

Answer 2

Rs=3+3=6

Rs=6+6=12

Rab =1/6+1/12=12×6/12+6=72/18=4