$A$ battery having $e.m.f.$ $5\,V$ and internal resistance $0.5\,\Omega$ is connected with a resistance of $4.5\,\Omega$. The voltage at the terminals of the battery is ............. $V$.

Five equal resistances each of resistance $R$ are connected as shown in the figure. $A$ battery of $V$ volts is connected between $A$ and $B$. The current flowing in $AFCEB$ will be

Under what condition can the current passing through the resistance $R$ be increased by short-circuiting the battery of emf $E_2$? The internal resistances of the two batteries are $r_1$ and $r_2$ respectively.

In the given circuit,if the measuring instruments are ideal,then the reading of ammeter $A_1$ is:

The storage battery of a car has an $emf$ of $12\; V$. If the internal resistance of the battery is $0.4\; \Omega,$ what is the maximum current (in $A$) that can be drawn from the battery?

In the figure shown,the capacity of the capacitor $C$ is $2\,\mu F$. The current in the $2\,\Omega$ resistor is ............... $A$.