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AIIMS 201827 May
Exam
AIIMS
Year
2018
Date
27 May
Subject
Physics
Chapter
Current Electricity

AIIMS 2018 · 27 May · Physics · Current Electricity

In a potentiometer experiment of a cell of emf 1.25 ~V gives...

In a potentiometer experiment of a cell of emf 1.25 V1.25 \mathrm{~V} gives balancing length of 30 cm30 \mathrm{~cm}. If the cell is replaced by another cell, balancing length is found to be 40 cm40 \mathrm{~cm}. What is the emf of second cell ?

Options

  1. A≃1.47 V\simeq 1.47 \mathrm{~V}
  2. B≃1.57 V\simeq 1.57 \mathrm{~V}
  3. C≃1.37 V\simeq 1.37 \mathrm{~V}
  4. D≃1.67 V\simeq 1.67 \mathrm{~V}

Correct answer

D. ≃1.67 V\simeq 1.67 \mathrm{~V}

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