CBSE Class 12-science Answered
the force between two charges at distance r is f what will be the force between these charges if the distance between them is doubled and charges are placed in a medium of dielectric constant 10 ?
Asked by aditya.loya9821 | 23 Jul, 2021, 18:44: PM
Expert Answer
Force between two charges q1 and q2 that are separated by a distance r is given as
where K = 1/(4) is Coulomb's constant and is permittivity of free space
If distance is doubled and charges are placed in a medium of dielectric constant εr = 10 , then force F is given as
Hence Force F between same charges after doubling distance and placed in a medium of
dielectric constant 10 decreases by a factor (1/40) in comparison with initial force f
Answered by Thiyagarajan K | 23 Jul, 2021, 19:13: PM
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