railway RRB Technician Grade 1 Mock Test 2024 Physics Electric Charges and Coulomb's Law Coulomb’s Law
Two point charges placed in a medium of dielectric constant 5 are at a distance r between them, experience an electrostatic force ‘F’. The electrostatic force between them in vacuum at the same distance r will be-
1
5F
2
F
3
F/2
4
F/5