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JEE Main 2024 Physics question

PhysicsElectrostatic Potential and CapacitanceJEE Main 2024

A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric sheet of thickness 2 mm, while keeping the battery connections intact, the capacitor draws 25% more charge from the battery than before. The dielectric constant of the sheet is .

Answer: 2

Solution

C = ε₀A/5 mm. With the sheet, C′ = ε₀A/(3 + 2/k) (mm). Since C′V =

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Question ID VK-017402