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NEET2018PhysicsCurrent ElectricityActual

In a potentiometer experiment of a cell of emf 1.25 ~V gives balancing length of 30 ~cm . If the cell is replaced by another cell, balancing length is found to be 40 ~cm . What is the emf of second cell ?

Options

  1. A1.47 ~V
  2. B1.57 ~V
  3. C1.37 ~V
  4. D1.67 ~V

Correct answer

D. 1.67 ~V

Step-by-step solution

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