$A$ voltmeter has a resistance of $G \, \Omega$ and a range of $V \, \text{volts}$. The value of the resistance that must be connected in series to convert it into a voltmeter of range $nV \, \text{volts}$ is:

  • A
    $nG$
  • B
    $(n - 1)G$
  • C
    $\frac{G}{n}$
  • D
    $\frac{G}{n - 1}$

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