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NEET2005PhysicsCurrent ElectricityActual

The potential difference between points A and B is

Options

  1. A20 7 ~V
  2. B40 7 ~V
  3. C10 7 ~V
  4. Dzero

Correct answer

D. zero

Step-by-step solution

From the given figure, current through lower branch of resistances which are joined in series is i₁= 10 4+3 = 10 7 amp Again current through upper branch of resistances which are also connected in series, is i₂= 10 8+6 = 10 14 amp Now according to the Kirchhoff's voltage law aligned V_B & -V_A=8 i₂-4 i₁ & =8 10 14 -4 10 7 =0 aligned

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