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NEET2016PhysicsElectrostaticsActual

Two charged spheres separated by a distance ' d ' exert some force on each other. If they are immersed in a liquid of dielectric constant 2 , then what is the force exerted, if all other conditions are same?

Options

  1. AF / 2
  2. BF
  3. C2 F
  4. D4 F

Correct answer

A. F / 2

Step-by-step solution

Given: Distance between two charges =d and dielectric constant (k)=2 . Force between two charged spheres (F)= 1 4 ₀ q₁ q₂ r₂ , where ₀ is permitivity of free space. Force for a medium with dielectric constant k , F^ = 1 k 1 4 ₀ q₁ q₂ r^2 = F k = F 2

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