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 $$5$$ Ω resistance, and is at a length of $$3m$$ when the cell is shunted by a $$10$$ Ω resistance. The internal resistance of the cell is

Question

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 $$5$$  Ω resistance, and is at a length of $$3m$$ when the cell is shunted by a $$10$$  Ω resistance. The internal resistance of the cell is

Infinity Learn · Accepted Answer

$$r=l1$$ − $$l2l2$$ ×R'  $$=l1$$ − $$22$$×$$5$$                 …..(i)r=$$ $$l1$$ − $$33$$×$$10$$                         …$$(ii)On$$ solving $$(i) and (ii), $$r=$$  $$10$$  Ω

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 $5 Ω$ resistance, and is at a length of 3m when the cell is shunted by a $10 Ω$ resistance. The internal resistance of the cell 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 5 Ω resistance, and is at a length of 3m when the cell is shunted by a 10 Ω resistance. The internal resistance of the cell is

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Ready to Test Your Skills?

free study material

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 $5 Ω$ resistance, and is at a length of 3m when the cell is shunted by a $10 Ω$ resistance. The internal resistance of the cell is