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In an experiment to measure the internal resistance of a cell by potentiometer it is...

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In an experiment to measure the internal resistance of a cell by potentiometer it is found that the balance point is at a length of 2m when the cell is shunted by a 42 resistance and at 3m when cell is shunted by a 852 resistance The internal resistance of cell is 3 169 1 120 2 802 4 10 The flux linked with a coil at any instant t is given by 10 50r 250 The induced emf at t 3s

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