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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > The balancing length for a cell is 560 cm in a potentiometer experiment. When an external resistance of 10 ohm is connected in parallel to the cell the balancing length changes by 60 cm. If the internal resistance of the cell is N/10 ohms, where N is an integer, then value of N is ……..

The balancing length for a cell is 560 cm in a potentiometer experiment. When an external resistance of 10 ohm is connected in parallel to the cell the balancing length changes by 60 cm. If the internal resistance of the cell is N/10 ohms, where N is an integer, then value of N is ……..

Which of the following gives a reversible operation?