Question

Seven resistors are connected as shown in the diagram.

The equivalent resistance in $\Omega$ of this network between $A$ and $B$ is:

• A. $6$
• B. $8$
• C. $12$
• D. $20$

Answer 1

The correct option is A $6$

The given circuit is equivalent to


As $10\times 4=5\times 8$, therefore this is balanced Wheatstone network
$\Rightarrow R=\frac{(5+4)\times (10+8)}{9+18}=6\Omega$