Question

A frame is formed by nine identical wires of resistance R each as shown in the figure.

The equivalent resistance between A and B is

• A. $\frac{5}{11}R$
• B. $\frac{1}{11}R$
• C. $\frac{15}{11}R$
• D. $\frac{6}{11}R$

Answer 1

The correct option is C $\frac{15}{11}R$

Apply Kirchoff’s law and use the concept of symmetry / anti-symmetry as well.