A ring is made of a wire having a resistance R0 = 12 $\Omega $. Find the points A and B, as shown in the figure, at which a current carrying conductor should be connected so that the resistance R of the sub circuit between these point is equal to ${8 \over 3}\Omega $.

Question

A ring is made of a wire having a resistance R₀ = 12 $\Omega $. Find the points A and B, as shown in the figure, at which a current carrying conductor should be connected so that the resistance R of the sub circuit between these point is equal to ${8 \over 3}\Omega $.

${{{l_1}} \over {{l_2}}} = {5 \over 8}$

${{{l_1}} \over {{l_2}}} = {1 \over 3}$

${{{l_1}} \over {{l_2}}} = {3 \over 8}$

${{{l_1}} \over {{l_2}}} = {1 \over 2}$

Solution

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