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Q.

In an experiment to determine the internal resistance of a cell with potentiometer, the balancing length is 165cm. When a resistance of 5 ohm is joined in parallel with the cell the balancing length is 150cm.The internal resistance of cell is

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a

1.1 Ohm

b

2.2 Ohm

c

0.5 Ohm

d

3.3 Ohm

answer is D.

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