$A$ cell of emf $6\, V$ and internal resistance $0.5\, \Omega$ is short-circuited. The current in the cell is ............... $A$.

In the given circuit, the potential difference between points $P$ and $Q$ is . . . . . . (in $\text{ V}$)

$A$ battery of $e.m.f.$ $3\, V$ and internal resistance $1.0\, \Omega$ is connected in series with a copper voltameter. The current flowing in the circuit is $1.5\, A$. The resistance of the voltameter will be ........... $\Omega$.

In the circuit shown, if the current through the resistor $R$ is $\frac{1}{5} \, A$, the value of $R$ is (in $\Omega$)

In the circuit shown in the figure, the ammeter and voltmeter are ideal. What would be the reading of the voltmeter in $volt$?

In the given circuit,the potentials at points $B$,$C$,and $D$ will be: