In the given circuit,the $5\, \Omega$ resistor dissipates $45\, J/s$ of heat due to the current flowing through it. The power dissipated per second in the $12\, \Omega$ resistor will be .............. $W$.

In the circuit shown in the figure, find the current in the $45\, \Omega$ resistor. (in $A$)

The resistance of an iron wire is $10\,\Omega$ and the temperature coefficient of resistivity is $5 \times 10^{-3}\,^{\circ}C^{-1}$. At $20\,^{\circ}C$,it carries $30\,mA$ of current. Keeping the potential difference between its ends constant,the temperature of the wire is raised to $120\,^{\circ}C$. The current in milliamperes that flows in the wire is:

In the given circuit,find the charge on the capacitors.

$A$ 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 ............. $V$.

$A$ battery of $6 \text{ V}$ is connected to the ends of a uniform wire $3 \text{ m}$ long and of resistance $100 \Omega$. The potential difference between two points $50 \text{ cm}$ apart on the wire is: (in $\text{ V}$)