In a potentiometer experiment, a wire of length 10 m and resistance $5 \Omega$ is connected to a cell of emf 2.2 V . If the potential difference between two points separated by a distance of 660 cm on potentiometer wire is 1.1 V , then the internal resistance of the cell is
- A
$1.6 \Omega$
- B
$1.4 \Omega$
- C
$1.2 \Omega$
- D
$1 \Omega$
✓ Correct answer: A
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