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AP EAMCET201724 Apr 2017Morning ShiftPhysicsCurrent ElectricityActual

When two cells of emfs E₁ and E₂ and different internal resistances are connected in series with an external load resistor, the current through the load is 5 ~A . If the polarity of cell of emf E₂ is reversed then the current through the load is 2 ~A . Then E₁ E₂ =

Options

  1. A5 2
  2. B2 5
  3. C7 3
  4. D3 7

Correct answer

C. 7 3

Step-by-step solution

No solution. Refer to answer key.

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