Question

Find the effective resistance of the circuit given :

Answer 1

We can easily figure out from potential difference method that the resistors of 21 $\Omega$ and of 7 $\Omega$ are in parallel and also resistor of 3 $\Omega$ and 6 $\Omega$ below it as well as the resistors of 6 $\Omega$ and 12 $\Omega$ below it are in parallel

Hence reducing the circuit as explained above we can calculate the equivalent resistance as $\frac{14}{5}$