In the circuit shown,the reading of the Ammeter is doubled after the switch is closed. Each resistor has a resistance $R = 1\,\Omega$ and the ideal cell has an $e.m.f. = 10\, V$. Then,the Ammeter has a coil resistance equal to ................ $\Omega$.

The actual value of resistance $R$,shown in the figure is $30\,\Omega$. This is measured in an experiment as shown using the standard formula $R_{measured} = \frac{V}{I}$,where $V$ and $I$ are the readings of the voltmeter and ammeter,respectively. If the measured value of $R$ is $5\%$ less than the actual value,then the internal resistance of the voltmeter is ................. $\Omega$.

The reading in the ideal voltmeter $(V)$ shown in the given circuit diagram is: (in $ V$)

$A$ battery of $emf$ $8 \ V$ and internal resistance $0.5 \ \Omega$ is being charged by a $120 \ V$ $dc$ supply using a series resistor of $15.5 \ \Omega$. The terminal voltage of the $8 \ V$ battery during charging is (in $V$)

Three resistances $A, B$ and $C$ having values $3R, 6R$ and $R$ respectively form a network as shown. When a potential difference is applied across the network,the thermal powers dissipated by $A, B$ and $C$ are in the ratio:

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