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Manipal MET2010PhysicsCurrent Electricity

In the electrical network shown in the figure, the potential difference across 3 resistance will be

Options

  1. A12 V
  2. B2.4 V
  3. C24 V
  4. D36 V

Correct answer

C. 24 V

Step-by-step solution

As 3 and 6 resistances are in parallel their equivalent resistance will be 2 . Here 2 and 4 are in series, their equivalent resistance will be 6 . From current distribution law aligned & i₁= 12 18 18 =12 ~A & i₂= 6 18 18 =6 ~A aligned Now 12 A current is entering in parallel combination of 3 and 6 again from current distribution law i₁^ = 6 12 9 =8 ~A i₂^ = 3 12 9 =4 ~A Potential difference across 3 resistance =8 3=24 ~V

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