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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A voltmeter of resistance RV and an ammeter of resistance RA are connected as shown in an attempt to measure the resistance R. The measured value of the resistance is RM=VI0 where V is reading of voltmeter and I0 is reading of the ammeter. find the true value of the resistance in terms of RM, RV and RA.

A voltmeter of resistance RV and an ammeter of resistance RA are connected as shown in an attempt to measure the resistance R. The measured value of the resistance is RM=VI0 where V is reading of voltmeter and I0 is reading of the ammeter. find the true value of the resistance in terms of RM, RV and RA.

A galvanometer has a resistance of G ohm and range of V volt. Calculate the resistance to be used in series with it to extend its range its range to nV volt. In figure