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MHT CET202314 May 2023Evening ShiftPhysicsCurrent ElectricityActual

In potentiometer experiment, the balancing length is 8 ~m when two cells E₁ and E₂ are joined in series. When two cells are connected in opposition the balancing length is 4 ~m . The ratio of the e.m.f. of the two cells ( E₁ E₂ ) is

Options

  1. A1:2
  2. B2:1
  3. C1:3
  4. D3:1

Correct answer

D. 3:1

Step-by-step solution

aligned & E ₁ E ₂ = l₁+l₂ l₁-l₂ = 8+4 8-4 & E ₁ E ₂ = 12 4 E ₁ E ₂ & =3 aligned

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