A null point is found at 200 cm in potentiometer when cell in secondary circuit is shunted by 5 
. When a resistance of 15 
is used for shunting null point moves to 300 cm. The internal resistance of the cell is _________ 
.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(5)
…..(i)
….(ii)
r = 5 
Ans. 5
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