In the following electrical network,the value of $I$ is (in $A$)

In a balanced Wheatstone bridge,the current in the galvanometer is zero. It remains zero when:

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

Write the necessary facts to understand Kirchhoff's laws.

Four resistances of $15\, \Omega, 12\, \Omega, 4\, \Omega$ and $10\, \Omega$ are connected in cyclic order to form a Wheatstone bridge network. The resistance that is to be connected in parallel with the resistance of $10\, \Omega$ to balance the network is ................. $\Omega$.

In the given circuit,current $I$ is independent of the resistance $R_6$. Then