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MHT CET20228 Aug 2022Morning ShiftPhysicsCurrent ElectricityActual

Two cells of e.m.f.'s E₁ and E₂ (E₁>E₂ ) are connected as shown in figure: When a potentiometer is connected between A and B the balancing length of the potentiometer wire is 300 ~cm . By connecting the same potentiometer between A and C , the balancing length is 100 ~cm . The ratio of E₁ E₂ is

Options

  1. A2:3
  2. B1:3
  3. C3:1
  4. D3:2

Correct answer

D. 3:2

Step-by-step solution

For balance potentiometer E_ A B E_ A C = l_ A B l_ A C aligned & E₁ E₁-E₂ = 300 100 & 3 E₁-3 E₂=E₁ & E₁: E₂=3: 2 aligned

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