# 1.3.1: Coulomb's Law and the Electrostatic Potential (Problems)

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PROBLEM $$\PageIndex{1}$$

Would you expect two like charges close together to have a relative potential energy above or below 0?

Like charges should have energies above 0.

PROBLEM $$\PageIndex{2}$$

Would you expect two like charges far apart to have a relative potential energy above or below 0?

Like charges should have energies above 0.

PROBLEM $$\PageIndex{3}$$

Would you expect two opposite charges far apart to have a relative potential energy above or below 0?

opposite charges should have energies below 0.

PROBLEM $$\PageIndex{4}$$

Rank the following scenarios from HIGHEST (most positive) to LOWEST (most negative) relative potential energy.

a. +3, -2 charges, 100 angstroms apart

b. +1, -1 charges, 200 angstroms apart

c. +1, +1 charges, 200 angstroms apart

d. -3, -3 charges, 100 angstroms apart

d, c, b, a