(a) Derive an expression for the ratio of the electrostatic potential energy of two…
PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
(a) Derive an expression for the ratio of the electrostatic potential energy of two point charges when they are placed in a medium of dielectric constant K to that when they are in vacuum, keeping the separation the same.
(b) Hence find the numerical value of this ratio for K=4.