A galvanometer of resistance, $G$ is shunted by a resistance $S$ $\mathrm{ohm}$. To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer is

An ammeter and a voltmeter are connected in series to a cell. Their readings are $X$ and $Y$ respectively. If a resistance is now joined in parallel with the voltmeter, then

The coil of a sensitive M.C.G. swings too far on both sides. This movement can be quickly stopped by

A galvanometer is said to be sensitive, if it gives

An ammeter should have very low resistance, so that it may

If galvanometer is shunted by $\frac{1}{n^{\mathrm{th}}}$ of its value, then what fraction of the current passes through the galvanometer?

The range of an ammeter of resistance $G$, is increased from $I$ to $nI$. This can be done by connecting

The range of voltmeter can be increased by