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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
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

Answered by Thiyagarajan K | 23 May, 2021, 01:15: PM
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