A voltmeter has a resistance of $G$ ohm and range $V$ volt. The value of resistance used in series to convert it into voltmeter of range $nV$ volt is

In previous question, the combined resistance of the shunt and the galvanometer is,

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The voltmeters are connected as shown.

A potential difference has been applied between $A$ and $B$. On closing the switch $S$, readings of voltmeters?

In figure, the voltmeter and ammeter shown are ideal. Then voltmeter and ammeter readings, respectively, are

A potentiometer arrangement is shown in the figure. The driver cell has emf $e$ and internal resistance $r$.

The resistance of potentiometer wire $AB$ is $R$. $F$ is the cell of emf $\frac{e}{3}$ and internal resistance $\frac{r}{3}$. Balance point ($J$) can be obtained for all finite values of