NEET Class neet Answered
In vaccume two forces placed at distance r have force F when theae charges are placed in a uniform dielectric medium (Dielectric constant K) the distance between them for the force will be
Asked by Raghavendrakumarsir | 23 May, 2021, 11:43: AM
Expert Answer
Let two charges q1 and q2 are at a distance r in vacuum
Then electrostatic force F between two charges is given as
......................(1)
where εo is the permittivity of free space
If the same charges q1 and q2 are placed in medium of dielectric constant K , to get force of same magnitude,
required distance r1 is determined as
.............................(2)
where ε is the permittivity of the medium with dielectric constant K so that ε = K εo
If we equate , equations (1) and (2) , we get
εo r2 = ε r12
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