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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > You are given two resistors X and Y whose resistances are to be determined using an ammeter of resistance 0.5Ω and a voltmeter of reistance 20kΩ. It is known that x is in the range of a few ohms. While Y is in the range of several thousand ohms. In each case, while of the following two connections (fig.) would you choose for resistance measurement? Justify your answer

You are given two resistors X and Y whose resistances are to be determined using an ammeter of resistance 0.5Ω and a voltmeter of reistance 20kΩ. It is known that x is in the range of a few ohms. While Y is in the range of several thousand ohms. In each case, while of the following two connections (fig.) would you choose for resistance measurement? Justify your answer

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