Question

the total resistance between a and b​

Answer 1

ACCORDING TO Wheatstone bridge the current passing to 5ohm Resistor is 0

since the corresponding resistors ratio is same

1/3+1/9=4/9=1/Req

Req=9/4=2.25ohms

Answer 2

Answer:

Explanation:

because the ratio between every two resistance is the same you can cancel the 5-ohm resistance the solve it as the 1/(1+2) + 1/(6+3) =R^-1

them Req =2.25 ohm.