The potential difference between $A$ and $B$ in the following figure is (in $V$)

$A$ part of a circuit is shown in the figure. The ratio of the potential differences between the points $A$ and $C$,and the points $D$ and $E$ is

In the following Wheatstone bridge,$P/Q = R/S$. If key $K$ is closed,then the galvanometer will show deflection:

In the circuit diagram shown below,the magnitude and direction of the flow of current respectively would be

$A$ battery of $10 \;V$ and negligible internal resistance is connected across the diagonally opposite corners of a cubical network consisting of $12$ resistors each of resistance $1 \;\Omega$. Determine the equivalent resistance of the network and the current along each edge of the cube.

In the following network, the current flowing through $15 \text{ } \Omega$ resistance is (in $\text{ A}$)