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CUET

Q13. A Potentiometer wire of length L and a resistance r are connected in series with a battery of emf Eo and a resistance r(a) An unknown emf E is balanced at a length I of the potentiometer wire. The emf E will be: (a) LEor / (r+r₁)l (b) Bor / Ir1 (c) Eor l / (r+r₁) L (d) Fol / L