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

Two resistances of $400 \Omega$ and $800 \Omega$ are connected in series with a $6 \text{ V}$ battery of negligible internal resistance. $A$ voltmeter of resistance $10000 \Omega$ is used to measure the potential difference across the $400 \Omega$ resistor. The error in the measurement of potential difference in volts is approximately:

What is the current $i$ in the circuit as shown in the figure (in $A$)?

The current $i$ in the adjoining circuit will be:

$A$ straight wire of resistance $R$ is bent into the shape of a square. $A$ cell of emf $12 \text{ V}$ is connected between two adjacent corners of the square. The potential difference across any diagonal of the square is (in $\text{ V}$)

Which of the following is not a correct statement?