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KCET2023PhysicsCapacitance

A par allel plate capacitor of capacitance C₁ with a dielectric slab in between its plates is connected to a battery. It has a potential difference V₁ across its plates. When the dielectric slab is removed, keeping the capacitor connected to the battery, the new capacitance and potential difference are C₂ and V₂ respectively, Then

Options

  1. AV₁=V₂, C₁
  2. BV₁>V₂, C₁>C₂
  3. CV₁ C₂
  4. DV₁=V₂, C₁>C₂

Correct answer

B. V₁>V₂, C₁>C₂

Step-by-step solution

Capacitance when dielectric slab is introduced. C₁= k ₀ A d As we know, C= Q V₁ But when dielectric is removed, C₁= ₀ A d = Q V₂ Clearly, C₂ V₂

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