In the part of a circuit shown in the figure,the potential difference $(V_G - V_H)$ between points $G$ and $H$ will be ............... $V$.

The current drawn from the battery in the given network is (Internal resistance of the battery is negligible). (in $A$)

In the circuit shown in the figure,$P \neq R$. The reading of the galvanometer remains the same with switch $S$ open or closed. Then

The current through the branch $BD$ in the given circuit is: (in $\,A$)

The currents in different parts of the electric circuit are shown in the following figure. The value of current $i$ is (in $\text{ A}$)

Two ideal batteries of emf $V_1$ and $V_2$ and three resistances $R_1, R_2$ and $R_3$ are connected as shown in the figure. The current in resistance $R_2$ would be zero if:
$(A)$ $V_1=V_2$ and $R_1=R_2=R_3$
$(B)$ $V_1=V_2$ and $R_1=2R_2=R_3$
$(C)$ $V_1=2V_2$ and $2R_1=2R_2=R_3$
$(D)$ $2V_1=V_2$ and $2R_1=R_2=R_3$