In the circuit,the galvanometer $G$ shows zero deflection. If the internal resistance of batteries $A$ and $B$ is negligible,then the value of resistance $R$ is ....... $\Omega$.

In the given circuit,if the potential at point $B$ is $24 \ V$,the potential at point $A$ is: (in $V$)

The value of current $I$ in the electrical circuit as given below,when potential at $A$ is equal to the potential at $B$,will be . . . . . . $A$.

The figure shows a network of four resistors and three batteries. Which of the batteries is getting charged?

In the circuit shown in the figure,the current $I$ is (in $\,A$)

In a Wheatstone bridge,three resistances $P, Q$ and $R$ are connected in the three arms and the fourth arm is formed by two resistances $S_1$ and $S_2$ connected in parallel. The condition for the bridge to be balanced is