In a potentiometer wire experiment the e...

In a potentiometer wire experiment the emf of a battery in the primary circuit is `20V` and its internal resistance is `5Omega`. There is a resistance box in series with the battery and the potentiometer wire, whose resistance can be varied from `120Omega` to `170Omega`. Resistance of the potentiometer wire is `75Omega`. The following potential differences can be measured using this potentiometer.

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For a potenitometer experiment, the emf of a battery in the primary circuit is 20 V and its internal resistance is 5 Omega . There is a resistance box in series with the battery and the potentiometer wire, whose resistance can be varied from 120 Omega " to " 170 Omega . Resistance of the potentiometer wire is 75 Omega . The following potential differences can't be measured using this potentiometer

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