If each resistance in the figure is of $9\,\Omega$,then the reading of the ammeter is ............ $A$.

Which of the following is not a correct statement?

$A$ uniform metallic wire having resistance $4 \ \Omega$ is bent to form a square loop $(ABCD)$ (see figure). $A$ resistance of $2 \ \Omega$ is connected between points $B$ and $D$ and a battery of $2 \ V$ is connected across points $A$ and $C$ as shown in the figure. Now the value of current $(I)$ is: (in $A$)

The equivalent resistance and potential difference between $A$ and $B$ for the circuit shown are respectively:

What is the equivalent resistance between $A$ and $B$ in the figure below if $R = 3\,\Omega$?

The equivalent resistance between the points $P$ and $Q$ of the circuit given is