$A$ voltmeter of resistance $998\ \Omega$ is connected to a cell of $emf$ $2\ V$ and internal resistance $2\ \Omega$. The error in the measurement of $emf$ will be:

$A$ battery of internal resistance $4 \,\Omega$ is connected to the network of resistances as shown. In order to give the maximum power to the network,the value of $R$ (in $\Omega$) should be

An electric bulb of $60 \, W, 120 \, V$ is to be connected to a $220 \, V$ source. What resistance should be connected in series with the bulb so that the bulb glows properly?

If the galvanometer reading is zero,then the resistance $X = \dots \Omega$.

$A$ voltameter has a resistance of $2\,\Omega$. It is connected in series with a $10\,V$ battery and a $3\,\Omega$ resistor. The mass deposited at the cathode in a certain time is $1\,g$. Now,the voltameter and the $3\,\Omega$ resistor are connected in parallel with the battery. The increase in the mass of the metal deposited in the same time will be $...\,g$.

The resistance of a voltameter is $2\,\Omega$. It is connected in series to a battery of $10\,V$ through a resistance of $3\,\Omega$. In a certain time,the mass deposited on the cathode is $1\,g$. Now,the voltameter and the $3\,\Omega$ resistance are connected in parallel with the battery. The increase in the deposited mass on the cathode in the same time will be .............. $g$.