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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > In figure, (i) find the potential difference between the points A and B. (ii) Now we wish to measure this potential difference by using a voltmeter of resistance 2 kohm. Find the reading of the voltmeter and percentage error. (iii) solve part (ii) if the voltmeter were of resistance 20 kohm. What conclusion do you draw from the results you get in the above parts?

In figure, (i) find the potential difference between the points A and B. (ii) Now we wish to measure this potential difference by using a voltmeter of resistance 2 kohm. Find the reading of the voltmeter and percentage error. (iii) solve part (ii) if the voltmeter were of resistance 20 kohm. What conclusion do you draw from the results you get in the above parts?

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