Question

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

• A. $9\Omega$.
• B. $\frac{12}{5}\Omega$
• C. $8\Omega$
• D. $\frac{11}{3}\Omega$

Answer 1

Answer: (A)

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