Question
How is galvanometer converted into a voltmeter?
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Answer
A galvanometer can be converted into voltmeter of given range by connecting a high resistance called multiplier in series with the galvanometer, whose value is given as: $\text{R}\Big(\frac{\text{V}}{\text{I}_\text{g}}\Big)-\text{G}$
Where $V$ is the voltage to be measured, $I_g$ is the current for full scale deflection of galvanometer and $G$ is the resistance of galvanometer.
Where $V$ is the voltage to be measured, $I_g$ is the current for full scale deflection of galvanometer and $G$ is the resistance of galvanometer.
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