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AIIMS2010PhysicsCurrent Electricity

In the circuit shown, current flowing through 25 ~V cell is

Options

  1. A7.2 ~A
  2. B10 ~A
  3. C12 ~A
  4. D14.2 ~A

Correct answer

C. 12 ~A

Step-by-step solution

Applying K V L in loop A B C D A, A B F E A, A B G H A and A B I I A , we get aligned & 30-i₁ 11=-25 & 20+i₂ 5=25 & 5-i₃ 10=-25 & 10+i₄ 5=25 aligned Solving equations (i), (ii), (iii) and (iv) we get i₁=5 ~A , i₂=1 ~A , i₃=3 ~A and i₄=3 ~A . Hence, current flowing through 25 ~V cell is 12 ~A .

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