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Question

In the network of resistors shown in the adjoining figure, the equivalent resistance  between $$A$$ and $$B$$ is 
712417_19d52c7b6b4a45158f921c5ba8b98790.png


A
54 ohm
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B
18 ohm
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C
36 ohm
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D
9 ohm
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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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