The value of the resistance $R$ in the figure is .......... $\Omega$.

Write the necessary facts to understand Kirchhoff's laws.

In the Wheatstone's bridge shown,$P = 2\,\Omega$,$Q = 3\,\Omega$,$R = 6\,\Omega$ and $S = 8\,\Omega$. In order to obtain balance,the shunt resistance across '$S$' must be ............. $\Omega$.

The value of $I$ in the figure shown below is: (in $\text{ A}$)

In a Wheatstone bridge,all the four arms have equal resistance $R$. If the resistance of the galvanometer arm is also $R$,the equivalent resistance of the combination as seen by the battery is

Calculate the equivalent resistance between $A$ and $B$.