Question

How does the electric potential energy between two positively charged particles change if the distance between them is tripled?

Answer 1

Electric potential energy is based on r , not `r^2`

Explanation:

The electric potential energy equation is `U_E=k{q_1q_2}/r`

Therefore if r is tripled, `U_E` will be 1/3 the original value.

Coulomb's Law is based on `r^2`