Answer:
A- 18
Explanation:
It wont let me explain how
Answer:
An Object is positively charged if it has more Positive Electrons in that object
The electrostatic potential energy, U, of one point charge q at position d in the presence of an electric field E is defined as the negative of the work W done by the electrostatic force to bring it from the reference position d to that position

Thus, to double the electric potential energy U we need to reduce the distance of separation by half (1/2) because they are inversely proportion