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Most Important Selected Qs for JEE AdvancedPhysicsCapacitance

A parallel plate capacitor with plate area A and separation d has charge Q . A slab of dielectric constant k is inserted in space between the plates almost completely fills the space. If E ₀ and C ₀ be the electric field and capacitance before inserting the slab, then

Options

  1. Athe electric field after inserting the slab is E₀ k
  2. Bthe capacitance after inserting the slab is k C ₀
  3. Cthe induced charge on the slab is Q (1- 1 k )
  4. Dthe energy stored in the capacitor becomes U ₀ k , U ₀ being the energy of the capacitor before inserting the

Correct answer

D. the energy stored in the capacitor becomes U ₀ k , U ₀ being the energy of the capacitor before inserting the

Step-by-step solution

Q - Remain same Capacitance become KC

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