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A 10 wire fpotentiometer is connected to...

A 10 wire fpotentiometer is connected to an accumulator of steady voltage A7.8 m length of it balances the emf of a cell on open circuit When the cell delivers current through a conductor of resistance 10 `Omega` it is balaced against 7.0 m of the same potentiometer.Calculate the internal resistance of the cell.

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The correct Answer is:
1.14 `Omega`
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