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Manipal MET2016PhysicsCapacitance

Two capacitors of capacitances 3 ~F and 6 ~F are charged to a potential of 12 V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each will be

Options

  1. A4 V
  2. B12 V
  3. Czero
  4. D3 V

Correct answer

B. 12 V

Step-by-step solution

Given, C₁=3 ~F , C₂=6 ~F , V₁=V₂=12 ~V V=? The common potential across capacitors is given by V= C₁ V₁+C₂ V₂ C₁+C₂ V= 3 10⁻⁶ 12+6 10⁻⁶ 12 (3+6) 10⁻⁶ =12 ~V

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