two charges q1 and q2 are placed at a distance d and the force acting between them is F. If a medim of dielectric constant 4 is introduced arond them, the force now will be

  1. 4F
  2. 2F
  3. F/2
  4. F/4

Force between the two charge particles is given by:

F = q1q24πεor2 where εo  is the absolute permitivity of the vacuum.

when an dielectric material of constant k is introduced in between ,
F' = q1q24πkε0r2
F' = F/4

So force is reduced by 1/4 of the initial value.

 

  • 3
What are you looking for?