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NEET2022PhysicsCurrent ElectricityActual

A cell of emf 4 ~V and internal resistance 0.5 is connected to a 7.5 external resistance. The terminal potential difference of the cell is:

Options

  1. A3.75 ~V
  2. B4.25 ~V
  3. C4 ~V
  4. D0.375 ~V

Correct answer

A. 3.75 ~V

Step-by-step solution

As, i= E R +r Hence, i= 4 7.5+0.5 = 4 8 = 1 2 And, V = E -i r (where, the symbols have their usual meanings) aligned V & =4-0.5 0.5 ~V & =3.75 volt aligned

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