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MHT CET202311 May 2023Morning ShiftPhysicsCurrent ElectricityActual

In potentiometer experiments, two cells of e. m. f. ' E₁ ' and ' E₂ ' are connected in series (E₁>E₂ ) , the balancing length is 64 ~cm of the wire. If the polarity of E₂ is reversed, the balancing length becomes 32 ~cm . The ratio E ₁ / E ₂ is

Options

  1. A3: 2
  2. B2: 3
  3. C1: 3
  4. D3: 1

Correct answer

D. 3: 1

Step-by-step solution

For potentiometer, aligned E ₁ E ₂ & = l₁+l₂ l₁-l₂ E ₁ E ₂ & = 64+32 64-32 = 96 32 = 3 1 =3: 1 aligned

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