A moving coil galvanometer, having a resistance G, produces full scale deflection when a current I_g flows through it. This galvanometer can be…

A moving coil galvanometer, having a resistance G, produces full scale deflection when a current $\displaystyle \mathrm{I}_{\mathrm{g}}$ flows through it. This galvanometer can be converted into (i) an ammeter of range $\displaystyle 0$ to $\displaystyle \mathrm{I}_0\left(\mathrm{I}_0>\mathrm{I}_{\mathrm{g}}\right)$ by connecting a shunt resistance $\displaystyle \mathrm{R}_{\mathrm{A}}$ to it and (ii) into a voltmeter of range $\displaystyle 0$ to $\displaystyle \mathrm{V}\left(\mathrm{V}=\mathrm{GI}_0\right)$ by connecting a series resistance $\displaystyle \mathrm{R}_{\mathrm{V}}$ to it. Then,