In the given figure, battery E is balanced on 55 cm length of potentio – McqOptions

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1.	In the given figure, battery E is balanced on 55 cm length of potentiometer wire but when a resistance of 10 W is connected in parallel with the battery then it balances on 50 cm length of the potentiometer wire then internal resistance r of the battery is [DCE 2000; RPET 2000]
A.	1 W
B.	3 W
C.	10 W
D.	5 W
Answer» B. 3 W

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