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NTA Abhyas JEE Main2020PhysicsCurrent ElectricityPractice

In the circuit shown in the figure, if potential at point A is taken to be zero , the potential at point B is ?

Options

  1. A3 V
  2. B1 V
  3. C4 V
  4. D2 V

Correct answer

A. 3 V

Step-by-step solution

Current From D to C = 3 A ∴ V D - V C = 2 × 3 = 6 V V A = 0 ∴ V C = - 1 V ∴ V D + 1 = 6 ⇒ V D = 5 V V D - V B = 2 ∴ 5 - V B = 2 ⇒ V B = 3 V

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