You may have noticed in reading about electric field, electric potential, electric force, and electric energy that these quantities are very similar and follow very similar patterns. These notes will summarize the relationships between the four quantities, highlight their similarities and differences, and revisit the relationships between the four quantities for point charges.

The figure below summarizes the general relationships between the four quantities. These relationships are always true. It does not matter if you have a point charge, a sphere of charge, a cylinder of charge, or a random blob of charge - these relationships will always be true.

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If you know one quantity can get to any of the others

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