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COMEDK2020PhysicsCapacitance

Two capacitors C₁ and C₂ are charged to 120 ~V and 200 ~V , respectively. When they are connected in parallel, it is found that potential on each one of them is zero. Therefore,

Options

  1. A5 C₁=3 C₂
  2. B3 C₁=5 C₂
  3. C3 C₁+5 C₂=0
  4. D9 C₁=4 C₂

Correct answer

B. 3 C₁=5 C₂

Step-by-step solution

Given, V₁=120 ~V , V₂=200 ~V Since, potential on each capacitor is zero when they are connected in parallel. Hence, charge on each capacitor must be equal with unlike polarities together. aligned i.e. & q₁ &=q₂ & C₁ V₁ &=C₂ V₂ & C₁ 120 &=C₂ 200 & & 3 C₁ &=5 C₂ aligned

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