In the given circuit,the current in each resistance is: (in $A$)

In the circuit shown,the potential difference between $X$ and $Y$ will be ............. $V$.

In the given electrical circuit,the potential difference between points $P$ and $Q$ is ........... $V$.

As shown in the figure,the power dissipated in the $6\,\Omega$ resistor is $6\,W$. The power dissipated in the $4\,\Omega$ resistor will be: (in $,W$)

Resistances $R_1$ and $R_2$ are joined in parallel and a current is passed so that the amount of heat liberated is $H_1$ and $H_2$ respectively. The ratio $\frac{H_1}{H_2}$ has the value:

The effective resistance between points $P$ and $Q$ of the electrical circuit shown in the figure is