A positively charged particle and a negatively charged parti

A positively charged particle and a negatively charged particle are initially far apart. What happens to their electrostatic potential energy as they are brought closer together?

a. increases

b. decreases

c. does not change

Solution

As the oppositely charged particels are bringing together they get attracted more by electro static force and hence lose their energy by getting stability.

So,

(b) Decreases.