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

The figure below shows currents in a part of an electric circuit. The current $i$ is ............. $A$.

In the following electrical network, the value of $I$ is (in $\text{ A}$)

In the adjoining circuit,the galvanometer $G$ shows zero deflection. If the batteries $A$ and $B$ have negligible internal resistance,the value of the resistor $R$ will be .............. $\Omega$.

In the circuit shown in the given figure,the resistances $R_1$ and $R_2$ are respectively:

In the following network,$I_{1} = -0.4 \text{ A}$,$I_{4} = 1 \text{ A}$ and $I_{5} = 0.4 \text{ A}$. The values of $I_{2}$,$I_{3}$ and $I_{6}$ respectively are: