The figure shows a network of resistors each having value $12 Ω$ Find the equivalent resistance between points A and B.

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$8 Ω$

$\frac{11}{3} Ω$

$9 Ω$

$\frac{12}{5} Ω$

answer is A.

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Detailed Solution

By applying perpendicular axis symmetry, points lying on the line 'AD' have same potential, therefore resistance between EF and CD can be removed $R_{AB} = 9 Ω$

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