Electrical and Electronics Measurements Potentiometers

A Daniel cell is balanced on 240 cm length of potentiometer. Now the cell is short circuited by a resistance of 0.25 Ω and the balance is obtained at 80 cm. The internal resistance of the Daniel cell is:

1

0.5 Ω

2

2 Ω

3

0.25 Ω

4

1 Ω

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