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In a potentiometer experiment, the galvanometer shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of the balance is obtained across 50 cm of the wire. The internal resistance of the cell is
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Correct option is C
r=l1 − l2l2 ×R' =60 − 5050×6=1.2 ΩSimilar Questions
In the network shown, when switch S is open balancing length AN1 = 60 cm and when the switch S is closed, balancing length AN2 = 50 cm. then the value of r is
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