Two equal like charges in air repel eachother with a force F. By what percentage should each charge be reduced so that the force between them in medium of dielectric constant 2 reduces by `28`%`?
This display of light is often called sparking. It occurs due to electric discharge of the electrostatic changes produced in chewing the winter green life saver.
1. A point charge is a charge whose dimensions are negligibly small compared to its distance from another bodies.
2. Coulomb’s law explains the interaction between charges at rest.
By Universal law of gravitation,
F = \(\frac{Gm_1m_2}{r^2}\)
The force acting between two point masses m1 and m2, is independent of the nature of medium between them. Therefore, Gravitational force acting between two...