Q.

The resistance of all the wires between any two adjacent dots is R. The equivalent resistance between A and.B as shown in figure is

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a

73 R

b

76 R

c

148 R

d

None of these

answer is B.

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Detailed Solution

Given circuit can be reduced toRAB = 76 R
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The resistance of all the wires between any two adjacent dots is R. The equivalent resistance between A and.B as shown in figure is