Question

Find equivalent resistance between points $\text{A}$and $\text{B}$ for the given circuit, when the circuit is in steady state.

Answer 1

In the steady state, the current through capacitor branch is zero. So, the capacitor branch may be removed.

$\therefore$ The given circuit can be redrawn as follows,


$\therefore$ Equivalent resistance between points $\text{A}$and $\text{B}$ is,

$R_{eq}=\frac{r_0\times 3r_0}{r_0+3r_0}=\frac{3}{4}{r}_0$

Hence, option $\left(a\right)$ is correct.