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For the arrangement of the potentiometer...

For the arrangement of the potentiometer shown in the figure, the balance point is obtained at a distance 75 cm from A when the key k is open. Es=2V B E,=1.5V 602 The second balance point is obtained at 60 cm from A when the key k is closed. Find the internal resistance of the battery E1 :- 1 1.50 (220 3 0.50 4 10

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