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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > It is required to measure the resistance of a circuit operating at 120 V. There is only one galvanometer of current sensitivity 10^−6 A per division. How should the galvanometer be connected in the circuit to operate an ohmmeter? Why minimum resistance can be measured with such a galvanometer if its full-scale has 40 divisions?

It is required to measure the resistance of a circuit operating at 120 V. There is only one galvanometer of current sensitivity 10^−6 A per division. How should the galvanometer be connected in the circuit to operate an ohmmeter? Why minimum resistance can be measured with such a galvanometer if its full-scale has 40 divisions?

In the circuit shown below the key is pressed at time t = 0. Which of the following statements is are true ?