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Question

In the circuit shown in the figure, all wires have equal resistance r. Calculate equivalent resistance between A and B?

A

$$\dfrac{ 2r }{ 5 }$$

B

$$r$$

C

$$\dfrac{ r }{ 5 }$$

D

$$\dfrac{ 3r }{ 5 }$$

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Solution

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Correct option is B. $$\dfrac{ 3r }{ 5 }$$

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