In the given circuit,the current in $8 \Omega$ resistance is $1.5 \text{ A}$. The total current $(I)$ flowing in the circuit is (in $\text{ A}$)

The figure shows a network of resistances in which the point $A$ is earthed. The current through the $4\,\Omega$ resistor is

In the circuit shown,the reading of the ammeter (ideal) is the same with both switches open as with both closed. Find the value of resistance $R$ in $\Omega$.

What should be the relationship between the values of the three resistors shown in the figure so that they produce equal heat energy?

The equivalent resistance between the points $P$ and $Q$ of the circuit given is

$A$ $100\, V$ voltmeter of internal resistance $20\, k\Omega$ in series with a high resistance $R$ is connected to a $110\, V$ line. The voltmeter reads $5\, V$. The value of $R$ is ................ $k\Omega$.