A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is ___________.

The correct answer is $\boxed{\frac{G}{n-1}}$.

A voltmeter is a device used to measure the voltage between two points in an electric circuit. The resistance of a voltmeter is very high, so that it does not draw much current from the circuit being measured. This is important because the current drawn by the voltmeter could affect the voltage being measured.

The range of a voltmeter is the maximum voltage that it can measure. To convert a voltmeter of range $V$ to a voltmeter of range $nV$, we need to add a resistance in series with

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