Question

In the network of resistors shown in the adjoining figure, the equivalent resistance  between $$A$$ and $$B$$ is

A
54 ohm
B
18 ohm
C
36 ohm
D
9 ohm

Solution

The correct option is D $$9\ ohm$$Equivalent resistance of each bridge is, $$\dfrac{3+3}{2}=3\Omega$$We have 3 such bridges in series between A and B. So net resistance between AB is,$$3\times3\Omega = 9\Omega$$Option D is correct.Physics

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