In the circuit shown, $R_2$ is varied from zero to infinity, keeping other values constant. Which of the following graphs is/are correct?

In the circuit shown, reading of galvanometer is zero. Select the correct alternative(s).

In the circuit shown, the switch is closed at $t=0$. Select the correct alternatives

The figure shows two capacitors connected in parallel with two resistance and a battery of emf $10 \mathrm{V}$, internal resistance $5\mathrm{\Omega }$. At steady state,

Two identical circular rings having resistance $12\Omega$ each are placed in such a way that they cross each other's centres $C_1$ and $C_2$ as shown. They are joined at intersection points $P$ and $Q$ through conducting joints. Terminal $P$ and $Q$ are connected to the circuit having battery of EMF $10 \mathrm{V}$ as shown

For the portion of the circuit shown in figure, all the voltmeters are identical and reading of voltmeter $V_1$ and $V_2$ are $10 \mathrm{V}$ and $5 \mathrm{V}$ respectively, then

For the circuit shown in figure, capacitor is initially charged to potential of $5 \mathrm{V}$. Now switch $S$ is closed at $t=0$ and at time $t=t_0$ potential across $AB$ is found to be $\frac{35}{3} \mathrm{V}$, then