The value of current $I$ in the given circuit is (in $A$)

Calculate the net resistance of the circuit between $A$ and $B$.

In a portion of some large electrical network,currents in certain branches are known as shown in the figure. The value of $V_A - V_C$ is ............... $V$.

Four resistors are connected as shown in the figure. $A$ $6\,V$ battery of negligible resistance is connected across terminals $A$ and $C$. The potential difference across terminals $B$ and $D$ will be ............. $V$.

For the network shown in the figure,the value of the current $i$ is:

In the circuit shown in the figure,when no current flows through the $5\,\Omega$ resistor,the value of the resistor $X$ will be ........... $\Omega$.